Design of Concrete Structures

Question: An R.C.C. beam of 6 m span is 30 cm wide and has a lever arm of 55 cm. If it carries a U.D.L. of 12 t

A) Is safe in shear
B) Is safe with stirrups
C) Is safe with stirrups and inclined bars
D) Needs revision of section
Correct Option: D

Question: According to I.S. : 456, slabs which span in two directions with corners held down, are assumed tobe divided in each direction into middle strips and edge strips such that the width of the

A) Half of the width of the slab
B) Two-third of the width of the slab
C) Three-fourth of the width of the slab
D) Four-fifth of the width of the slab
Correct Option: C

Question: The load stress of a section can be reduced by

A) Decreasing the lever arm
B) Increasing the total perimeter of bars
C) Replacing larger bars by greater number of small bars
D) Replacing smaller bars by greater number of greater bars
Correct Option: C

Question: The diameter of the column head support a flat slab, is generally kept

A) 0.25 times the span length
B) 0.25 times the diameter of the column
C) 4.0 cm larger than the diameter of the column
D) 5.0 cm larger than the diameter of the column
Correct Option: A

Question: If W is the uniformly distributed load on a circular slab of radius fixed at its ends, the

A) 3WR²/16
B) 2WR²/16
C) WR²/16
D) None of these
Correct Option: C

Question: The maximum ratio of span to depth of a slab simply supported and spanning in

A) 35
B) 25
C) 30
D) 20
Correct Option: C

Question: If the width of the foundation for two equal columns is restricted, the shape of the footing

A) Square
B) Rectangular
C) Trapezoidal
D) Triangular
Correct Option: B

Question: The floor slab of a building is supported on reinforced cement floor beams. The ratio of the end

A) 0.7
B) 0.8
C) 0.9
D) 0.6
Correct Option: C

Question: Pick up the correct statement from the following:

A) Lateral reinforcement in R.C.C. columns is provided to prevent the longitudinalreinforcement from buckling
B) Lateral reinforcement prevents the shearing of concrete on diagonal plane
C) Lateral reinforcement stops breaking away of concrete cover, due to buckling
D) All the above
Correct Option: D

Question: In case the factor of safety against sliding is less than 1.5, a portion of slab is constructed

A) A key
B) A cut-off wall
C) A rib
D) All the above
Correct Option: D

Question: Lapped splices in tensile reinforcement are generally not used for bars of size

A) 18 mm diameter
B) 24 mm diameter
C) 30 mm diameter
D) 36 mm diameter
Correct Option: D

Question: Minimum spacing between horizontal parallel reinforcement of the same size should not be less

A) One diameter
B) 2.5 diameters
C) 3 diameters
D) 3.5 diameters
Correct Option: A

Question: For a ribbed slab

A) Clear spacing between ribs shall not be greater than 4.5 cm
B) Width of the rib shall not be less than 7.5 cm
C) Overall depth of the slab shall not exceed four times the breadth of the rib
D) All the above
Correct Option: D

Question: A very comfortable type of stairs is

A) Straight
B) Dog legged
C) Geometrical
D) Open newel
Correct Option: D

Question: Columns may be made of plain concrete if their unsupported lengths do not exceed their least

A) Two times
B) Three times
C) Four times
D) Five times
Correct Option: C

Question: The width of the flange of a L-beam, should be less than

A) One-sixth of the effective span
B) Breadth of the rib + four times thickness of the slab
C) Breadth of the rib + half clear distance between ribs
D) Least of the above
Correct Option: D

Question: A pre-stressed concrete member is preferred because

A) Its dimensions are not decided from the diagonal tensile stress
B) Large size of long beams carrying large shear force need not be adopted
C) Removal of cracks in the members due to shrinkage
D) All the above
Correct Option: D

Question: If the ratio of the span to the overall depth does not exceed 10, the stiffness of the beam will

A) Simply supported beam
B) Continuous Beam
C) Cantilever beam
D) None of these
Correct Option: C

Question: A pile of length carrying a uniformly distributed load per metre length is suspended at two

A) WL/8
B) WL²/24
C) WL²/47
D) WL²/16
Correct Option: C

Question: If 'P' is the net upward pressure on a square footing of side for a square column of side , the

A) B.M = pb (c - a)/4
B) B.M = pb (b - a)²/4
C) B.M = pb (b - a)²/8
D) B.M = pb (b + a)/8
Correct Option: C

Question: To ensure uniform pressure distribution, the thickness of the foundation, is

A) Kept uniform throughout
B) Increased gradually towards the edge
C) Decreased gradually towards the edge
D) Kept zero at the edge
Correct Option: C

Question: According to load tactor method, the permissible load 'W' on a short reinforced with
longitudinal bars and lateral stirrups, is

A) Stress in concrete × area of concrete
B) Stress in steel × area of steel
C) Stress in concrete × area of concrete + Stress in steel × area of steel
D) None of these
Correct Option: C

Question: If p1 and p2 are mutually perpendicular principal stresses acting on a soil mass, the normal stress

A) [(p1 - p2)/2] + [(p1 + p2)/2] Sin 2θ
B) [(p1 - p2)/2] + [(p1 + p2)/2] Cos 2θ
C) [(p1 + p2)/2] + [(p1 - p2)/2] Cos 2θ
D) [(p1 + p2)/2] + [(p1 - p2)/2] Sin 2θ
Correct Option: C

Question: The maximum permissible size of aggregates to be used in casting the ribs of a

A) 5 mm
B) 7.5 mm
C) 10 mm
D) 15 mm
Correct Option: C

Question: Pick up the incorrect statement from the following: Tensile reinforcement bars of a rectangular

A) Are curtailed if not required to resist the bending moment
B) Are bent up at suitable places to serve as shear reinforcement
C) Are bent down at suitable places to serve as shear reinforcement
D) Are maintained at bottom to provide at least local bond stress
Correct Option: C

Question: Steel bars are generally connected together to get greater length than the standard length by

A) Straight bar splice
B) Hooked splice
C) Dowel splice
D) All the above
Correct Option: D

Question: The minimum thickness of the cover at the end of a reinforcing bar should not be less than twice

A) 10 mm
B) 15 mm
C) 20 mm
D) 25 mm
Correct Option: D

Question: Top bars are extended to the projecting parts of the combined footing of two columns Ldistance

A) 0.1 L from the outer edge of column
B) 0.1 L from the centre edge of column
C) Half the distance of projection
D) One-fourth the distance of projection
Correct Option: B

Question: For M 150 grade concrete (1:2:4) the moment of resistance factor is

A) 0.87
B) 8.5
C) 7.5
D) 5.8
Correct Option: B

Question: P' is the pre-stressed force applied to tendon of a rectangular pre-stressed beam whose area of cross section is 'A' and sectional modulus is 'Z' . The minimum stress 'f'on the beam

A) f = (P/A) - (Z/M)
B) f = (A/P) - (M/Z)
C) f = (P/A) - (M/Z)
D) f = (P/A) - (M/6Z)
Correct Option: C

Question: If C is creep coefficient, f is original pre-stress in concrete, m is modular ratio, E is Young's modulus

A) (1 - C)mf - eE
B) (C - 1)mf + eE
C) (C - 1)mf - eE
D) (1 - C)mf + eE
Correct Option: B

Question: In a pre-stressed member it is advisable to use

A) Low strength concrete only
B) High strength concrete only
C) Low strength concrete but high tensile steel
D) High strength concrete and high tensile steel
Correct Option: D

Question: An R.C.C. lintel is spanning an opening of 2 m span in a brick wall. The height of the roof is 2.9 mabove the floor level and that of the opening is 2.1 m above the floor level. The lintel is to be

A) Triangular load of the wall
B) UDL of wall
C) UDL of wall + load from the roof
D) Triangular load + load from the roof
Correct Option: C

Question: The minimum clear cover for R.C.C. columns shall be

A) Greater of 40 mm or diameter
B) Smaller of 40 mm or diameter
C) Greater of 25 mm or diameter
D) Smaller of 25 mm or diameter
Correct Option: C

Question: The minimum thickness of a flat slab is taken

A) L/32 for end panels without drops
B) L/36 for end panels without drops
C) L/36 for interior panels without drop
D) All the above
Correct Option: D

Question: The design of heel slab of a retaining wall is based on the maximum bending

A) Its own weight
B) Weight of the soil above it
C) Load of the surcharge, if any
D) All the above
Correct Option: D

Question: An R.C.C beam of 25 cm width has a clear span of 5 metres and carries a U.D.L. of 2000 kg/m

A) Safe in shear
B) Is safe with stirrups
C) Is safe with stirrups and inclined members
D) Needs revision of the section
Correct Option: A

Question: The neutral axis of a T-beam exists

A) Within the flange
B) At the bottom edge of the slab
C) Below the slab
D) All the above
Correct Option: D

Question: A pre-cast pile generally used, is

A) Circular
B) Square
C) Octagonal
D) Square with corners chamfered
Correct Option: D

Question: The spacing of transverse reinforcement of column is decided by the following

A) The least lateral dimension of the column
B) Sixteen times the diameter of the smallest longitudinal reinforcing rods in the column
C) Forty-eight times the diameter of transverse reinforcement
D) All the above
Correct Option: D

Question: The self-weight of the footing, is

A) Not considered for calculating the upward pressure on footing
B) Also considered for calculating the upward pressure on footing
C) Not considered for calculating the area of the footing
D) Both (b) and (c)
Correct Option: A

Question: Pick up the incorrect statement from the following:

A) In the stem of a retaining wall, reinforcement is provided near the earth side
B) In the toe slab of a retaining wall, reinforcement is provided at the bottom of the slab
C) In the heel slab of a retaining wall, reinforcement is provided at the top of the slab
D) None of these
Correct Option: D

Question: If the bearing capacity of soil is 10 tonnes/cm2 and the projection of plain concrete footing from

A) D = 0.0775 a
B) D = 0.775 a
C) D = 0.775 √a
D) D = 0.775 a2
Correct Option: B

Question: After pre-stressing process is completed, a loss of stress is due to

A) Shrinkage of concrete
B) Elastic shortening of concrete
C) Creep of concrete
D) All the above
Correct Option: D

Question: In a simply supported slab, alternate bars are curtailed at

A) 1/4th of the span
B) 1/5th of the span
C) 1/6th of the span
D) 1/7th of the span
Correct Option: D

Question: If R and T are rise and tread of a stair spanning horizontally, the steps are supported by a wall on

A) R + T
B) T - R
C) √(R2 + T2)
D) R - T
Correct Option: C

Question: If p1 and P2 are effective lateral loadings at the bottom and top exerted by a level earth subjectedto a super-load on the vertical face of height h of a retaining wall, the horizontal pressure p

A) [(p1 - p2)/2] h
B) [(p1 + p2)/4] h
C) [(p1 + p2)/2] h
D) (p1 - p2) 2/3h
Correct Option: C

Question: In the zone of R.C.C. beam where shear stress is less than 5 kg/cm2, nominal reinforcement is

A) One-half lever arm of the section
B) One-third lever arm of the section
C) Lever arm of the section
D) One and half lever arm of the section
Correct Option: C

Question: The transverse reinforcements provided at right angles to the main reinforcement

A) Distribute the load
B) Resist the temperature stresses
C) Resist the shrinkage stress
D) All the above
Correct Option: D

Question: Long and short spans of a two way slab are ly and lx and load on the slab acting on strips parallel

A) (wx/wy) = (ly/lx)
B) (wx/wy) = (ly/lx)²
C) (wx/wy) = (ly/lx)4
D) None of these
Correct Option: C

Question: The pitch of the main bars in a simply supported slab, should not exceed its

A) Three times
B) Four times
C) Five times
D) Six times
Correct Option: D

Question: High strength concrete is used in pre-stressed member

A) To overcome high bearing stresses developed at the ends
B) To overcome bursting stresses at the ends
C) To provide high bond stresses
D) All the above
Correct Option: D

Question: if 'w' High strength concrete is used in pre-stressed member

A) WR²/16
B) 2WR²/16
C) 3WR²/16
D) 5WR²/16
Correct Option: C

Question: If A is the area of the foundation of a retaining wall carrying a load W and retaining earth of weight w per unit volume, the minimum depth (h) of the foundation from the free surface of

A) h = (W/Aw) [(1 - sin ϕ)/(1 + sin ϕ)]
B) h = (W/Aw) [(1 + sin ϕ)/(1 + sin ϕ)]
C) h = (W/Aw) [(1 - sin ϕ)/(1 + sin ϕ)]2
D) h = √(W/Aw) [(1 - sin ϕ)/(1 + sin ϕ)]2
Correct Option: C

Question: If the permissible compressive and tensile stresses in a singly reinforced beam are 50 kg/cm2 and1400 kg/cm2 respectively and the modular ratio is 18, the percentage area At of the steel

A) 0.00496
B) 0.00596
C) 0.00696
D) 0.00796
Correct Option: C

Question: The modular ratio m of a concrete whose permissible compressive stress is C, may be obtained

A) m = 700/3C
B) m = 1400/3C
C) m = 2800/3C
D) m = 3500/3C
Correct Option: C

Question: Enlarged head of a supporting column of a flat slab is technically known as

A) Supporting end of the column
B) Top of the column
C) Capital
D) Drop panel
Correct Option: C

Question: Thickened part of a flat slab over its supporting column, is technically known as

A) Drop panel
B) Capital
C) Column head
D) None of these
Correct Option: A

Question: If' A' is the sectional area of a pre-stressed rectangular beam provided with a tendon pre-stressed

A) P/A
B) A/P
C) P/2A
D) 2A/P
Correct Option: A

Question: Side face reinforcement shall be provided in the beam when depth of the web in a

A) 50 cm
B) 75 cm
C) 100 cm
D) 120 cm
Correct Option: B

Question: A pre-stressed rectangular beam which carries two concentrated loads W at L/3 from either end, is provided with a bent tendon with tension P such that central one-third portion of the tendon

A) WL/P
B) WL/2P
C) WL/3P
D) WL/4P
Correct Option: C

Question: The minimum head room over a stair must be

A) 200 cm
B) 205 cm
C) 210 cm
D) 230 cm
Correct Option: C

Question: If q is the punching shear resistance per unit area a, is the side of a square footing for a column ofside b, carrying a weight W including the weight of the footing, the depth (D) of the footing

A) D = W (a - b)/4a²bq
B) D = W (a² - b²)/4a²bq
C) D = W (a² - b²)/8a²bq
D) D = W (a² - b²)/4abq
Correct Option: B

Question: For initial estimate for a beam design, the width is assumed

A) 1/15th of span
B) 1/20th of span
C) 1/25th of span
D) 1/30th of span
Correct Option: D

Question: In a slab, the pitch of the main reinforcement should not exceed its effective depth

A) Three times
B) Four times
C) Five times
D) Two times
Correct Option: ans n/A

Question: If the length of a combined footing for two columns l metres apart is L and the projection on theleft side of the exterior column is x, then the projection y on the right side of the exterior column,

A) y = L - (l - )
B) y = L/2 + (l - )
C) y = L/2 - (l + )
D) y = L/2 - (l - )
Correct Option: D

Question: Total pressure on the vertical face of a retaining wall of height h acts parallel to free surface and

A) h/4
B) h/3
C) h/2
D) 2h/3
Correct Option: B

Question: If the tendon is placed at an eccentricity e below the centroidal axis of the longitudinal axis of the rectangular beam (sectional modulus Z and stressed load P in tendon) the stress at the

A) Is increased by PZ/e
B) Is increased by Pe/Z
C) Is decreased by Pe/Z
D) Remains unchanged
Correct Option: C

Question: The Young's modulus of elasticity of steel, is

A) 150 KN/mm2
B) 200 KN/mm2
C) 250 KN/mm2
D) 275 KN/mm2
Correct Option: D

Question: Design of a two way slab simply supported on edges and having no provision to prevent the

A) Rankine formula
B) Marcus formula
C) Rankine Grashoff formula
D) Grashoff formula
Correct Option: C

Question: Spacing of stirrups in a rectangular beam, is

A) Kept constant throughout the length
B) Decreased towards the centre of the beam
C) Increased at the ends
D) Increased at the centre of the beam
Correct Option: D

Question: As per IS : 456, the reinforcement in a column should not be less than

A) 0.5% and not more than 5% of cross-sectional area
B) 0.6% and not more than 6% of cross-sectional area
C) 0.7% and not more than 7% of cross-sectional area
D) 0.8% and not more than 8% of cross-sectional area
Correct Option: D

Question: The allowable tensile stress in mild steel stirrups, reinforced cement concrete, is

A) 1400 kg/cm2
B) 190 kg/cm2
C) 260 kg/cm2
D) 230 kg/cm2
Correct Option: A

Question: Bottom bars under the columns are extended into the interior of the footing slab to a distance

A) 42 diameters from the centre of the column
B) 42 diameters from the inner edge of the column
C) 42 diameters from the outer edge of the column
D) 24 diameters from the centre of the column
Correct Option: C

Question: Pick up the assumption for the design of a pre-stressed concrete member from the

A) A transverse plane section remains a plane after bending
B) During deformation limits, Hook's law is equally applicable to concrete as well as to steel
C) Variation of stress in reinforcement due to changes in external loading is negligible
D) All the above
Correct Option: D

Question: The advantage of reinforced concrete, is due to

A) Monolithic character
B) Fire-resisting and durability
C) Economy because of less maintenance cost
D) All the above
Correct Option: D

Question: An R.C.C. column is treated as short column if its slenderness ratio is less than

A) 30
B) 35
C) 40
D) 50
Correct Option: D

Question: The zone in which transverse bending is likely to occur may be obtained by drawing a line from the faces of the column making an angle 0 with horizontal where 0 is

A) 30°
B) 45°
C) 60°
D) None of these
Correct Option: B

Question: The thickness of the topping of a ribbed slab, varies between

A) 3 cm to 5 cm
B) 5 cm to 8 cm
C) 8 cm to 10 cm
D) 12 cm to 15 cm
Correct Option: B

Question: If the length of an intermediate span of a continuous slab is 5m, the length of the

A) 4.5 m
B) 4.0 m
C) 3.5 m
D) 3.0 m
Correct Option: A

Question: If L is the effective span of a R.C.C. beam which is subjected to maximum shear qmax at the ends,

A) (L/2) (1 - 3/qmax)
B) (L/3) (1 - 5/qmax)
C) (L/2) (1 - 5/qmax)
D) (L/2) (1 - 2/qmax)
Correct Option: C

Question: The angle of internal friction of soil mass is the angle whose

A) Tangent is equal to the rate of the maximum resistance to sliding on any internal inclinedplane to the normal pressure acting on the plane
B) Sine is equal to the ratio of the maximum resistance to sliding on any internal inclined planeto the normal pressure acting on the plane
C) Cosine is equal to the ratio of the maximum resistance sliding on any internal inclined planeto the normal pressure acting on the plane
D) None of these
Correct Option: A

Question: The maximum ratio of span to depth of a slab simply supported and spanning in

A) 25
B) 30
C) 35
D) 40
Correct Option: C

Question: If T and R are the tread and rise of a stair which carries a load w per square metre on slope, the

A) w (R + T)/T
B) w √(R² + T²)/T
C) w √(R + T)/T
D) w (R/T)
Correct Option: B

Question: If the loading on a pre-stressed rectangular beam, is uniformly distributed, the tendon to be

A) Straight below centroidal axis
B) Parabolic with convexity downward
C) Parabolic with convexity upward
D) Straight above centroidal axis
Correct Option: B

Question: For normal cases, stiffness of a simply supported beam is satisfied if the ratio of its span to its

A) 10
B) 15
C) 20
D) 25
Correct Option: C

Question: If the maximum dip of a parabolic tendon carrying tension P is h and the effective length of the

A) 8hp/l
B) 8hp/l²
C) 8hl/p
D) 8hl/p²
Correct Option: B

Question: If depth of slab is 10 cm, width of web 30 cm, depth of web 50 cm, centre to centre distance of

A) 200 cm
B) 300 cm
C) 150 cm
D) 100 cm
Correct Option: C

Question: The steel generally used in R.C.C. work, is

A) Stainless
B) Mild steel
C) High carbon steel
D) High tension steel
Correct Option: B

Question: If the ratio of long and short spans of a two way slab with corners held down is r, the actual

A) (5/6) (r/1 + r²) M
B) (5/6) (r²/1 + r²) M
C) (5/6) (r²/1 + r3) M
D) (5/6) (r²/1 + r4) M
Correct Option: D

Question: A part of the slab may be considered as the flange of the T-beam if

A) Flange has adequate reinforcement transverse to beam
B) It is built integrally with the beam
C) It is effectively bonded together with the beam
D) All the above
Correct Option: D

Question: By over-reinforcing a beam, the moment of resistance can be increased not more

A) 0.1
B) 0.15
C) 0.2
D) 0.25
Correct Option: D

Question: Total pressure on the vertical face of a retaining wall of height 'h' per unit run exerted by the

A) wh [(1 - sin ϕ)/(1 + sin ϕ)]
B) wh2 [(1 - sin ϕ)/(1 + sin ϕ)]
C) wh2 [(1 - sin ϕ)/2(1 + sin ϕ)]
D) wh3 [(1 - sin ϕ)/3(1 + sin ϕ)]
Correct Option: C

Question: A singly reinforced beam has breadth b, effective depth d, depth of neutral axis n and critical neutral axis n1. If fc and ft are permissible compressive and tensile stresses, the moment to

A) bn (fc/2) (d - n/3)
B) Atft (d - n/3)
C) ½ n1 (1 - n1/3) cbd²
D) All the above
Correct Option: D

Question: According to I.S.: 456, 1978 the thickness of reinforced concrete footing on piles at its edges, is

A) 5 cm
B) 10 cm
C) 15 cm
D) 20 cm
Correct Option: C

Question: If l1 and l2 are the lengths of long and short spans of a two way slab simply supported on four edges and carrying a load w per unit area, the ratio of the loads split into w1 and w2 acting

A) w1/w2 = l2/l1
B) w1/w2 = (l2/l1)²
C) w1/w2 = (l2/l1)3
D) w1/w2 = (l2/l1)4
Correct Option: D

Question: The live load to be considered for an accessible roof, is

A) Nil
B) 75 kg/m3
C) 150 kg/m2
D) 200 kg/cm2
Correct Option: C

Question: If Ac, Asc and A are areas of concrete, longitudinal steel and section of a R.C.C. column and m andσc are the modular ratio and maximum stress in the configuration of concrete, the strength

A) σcAc + mc Asc
B) σc(A - Asc) + mc Asc
C) σc[A + (m - 1)Asc]
D) All the above
Correct Option: D

Question: On an absolutely rigid foundation base, the pressure will

A) Be more at the edges of the foundation
B) Be uniform
C) Not be uniform
D) Be zero at the centre of the foundation
Correct Option: C

Question: The diameter of transverse reinforcement of columns should be equal to one-fourth of the

A) 4 mm
B) 5 mm
C) 6 mm
D) 7 mm
Correct Option: D

Question: If longitudinally spanning stairs are casted along with their landings, the maximum bending

A) wl²/4
B) wl²/8
C) wl²/10
D) wl²/12
Correct Option: B

Question: If P kg/m2 is the upward pressure on the slab of a plain concrete footing whose projection on

A) D = 0.00775 aP
B) D = 0.0775 aP
C) D = 0.07775 aP
D) D = 0.775 Pa
Correct Option: A

Question: If the shear stress in a R.C.C. beam is

A) Equal or less than 5 kg/cm2, no shear reinforcement is provided
B) Greater than 4 kg/cm2, but less than 20 kg/cm2, shear reinforcement is provided
C) Greater than 20 kg/cm2, the size of the section is changed
D) All the above
Correct Option: D

Question: For a continuous floor slab supported on beams, the ratio of end span length and intermediate

A) 0.6
B) 0.7
C) 0.8
D) 0.9
Correct Option: D

Question: In a singly reinforced beam

A) Compression is borne entirely by concrete
B) Steel possesses initial stresses when embedded in concrete
C) Plane sections transverse to the centre line of the beam before bending remain plane afterbending
D) Elastic moduli for concrete and steel have different values within the limits of deformationof the beam
Correct Option: C

Question: The ratio of the breadth to effective depth of a beam is kept

A) 0.25
B) 0.5
C) 0.7
D) 0.75
Correct Option: B

Question: In a cantilever retaining wall without a heel slab

A) Thickness of the stem is kept same throughout
B) Base slab is made 10 cm thicker than the stem
C) Width of the base slab is kept 0.7 time the total height of the wall
D) All the above
Correct Option: D

Question: P' is the pre-stressed force applied to the tendon of a rectangular pre-stressed beam whose areaof cross section is' A' and sectional modulus is 'Z' . The maximum stress 'f' in the beam,

A) f = (P/A) + (Z/M)
B) f = (A/P) + (M/Z)
C) f = (P/A) + (M/Z)
D) f = (P/A) + (M/6Z)
Correct Option: C

Question: A T-beam behaves as a rectangular beam of a width equal to its flange if its neutral

A) Remains within the flange
B) Remains below the slab
C) Coincides the geometrical centre of the beam
D) None of these
Correct Option: A

Question: For the design of a simply supported T-beam the ratio of the effective span to the overall depth of

A) 10
B) 15
C) 20
D) 25
Correct Option: C

Question: A reinforced concrete cantilever beam is 3.6 m long, 25 cm wide and has its lever arm 40 cm. It carries a load of 1200 kg at its free end and vertical stirrups can carry 1800 kg. Assuming concrete

A) 30
B) 35
C) 40
D) 45
Correct Option: C

Question: The width of the rib of a T-beam, is generally kept between

A) 1/7 to 1/3 of rib depth
B) 1/3 to 1/2 of rib depth
C) 1/2 to 3/4 of rib depth
D) 1/3 to 2/3 of rib depth
Correct Option: D

Question: A ribbed slab is provided for

A) A plain ceiling
B) Thermal insulation
C) Acoustic insulation
D) All the above
Correct Option: D

Question: To ensure that the hogging bending moment at two points of suspension of a pile oflength L equals the sagging moment at its centre, the distances of the points of suspension

A) 0.107 L
B) 0.207 L
C) 0.307 L
D) 0.407 L
Correct Option: B

Question: The stresses developed in concrete and steel in reinforced concrete beam 25 cm width and 70 cm effective depth, are 62.5 kg/cm2 and 250 kg/cm2 respectively. If m = 15, the depth of its

A) 20 cm
B) 25 cm
C) 30 cm
D) 35 cm
Correct Option: C

Question: If the depth of actual neutral axis of a doubly reinforced beam

A) Is greater than the depth of critical neutral axis, the concrete attains its maximum stressearlier
B) Is less than the depth of critical neutral axis, the steel in the tensile zone attains its maximumstress earlier
C) Is equal to the depth of critical neutral axis; the concrete and steel attain their maximumstresses simultaneously
D) All the above
Correct Option: D

Question: If the modular ratio is 'm' , steel ratio is' r' and overall depth of a beam is 'd' , the depth of the

A) [m/(m - r)] d
B) [m/(m + r)] d
C) [(m + r)/m] d
D) [(r - m)/m] d
Correct Option: B

Question: The maximum diameter of a bar used in a ribbed slab, is

A) 12 mm
B) 6 mm
C) 20 mm
D) 22 mm
Correct Option: D

Question: A column is regarded as long column if the ratio of its effective length and lateral dimension,

A) 10
B) 15
C) 20
D) 25
Correct Option: B

Question: According to the steel beam theory of doubly reinforced beams

A) Tension is resisted by tension steel
B) Compression is resisted by compression steel
C) Stress in tension steel equals the stress in compression steel
D) All the above
Correct Option: D

Question: The breadth of a ribbed slab containing two bars must be between

A) 6 cm to 7.5 cm
B) 8 cm to 10 cm
C) 10 cm to 12 cm
D) 12 cm to 15 cm
Correct Option: B

Question: The stem of a cantilever retaining wall which retains earth level with top is 6 m. If the angle ofrepose and weight of the soil per cubic metre are 30° and 2000 kg respectively, the effective

A) 51.5
B) 52.5
C) 53.5
D) 54.5
Correct Option: C

Question: If the diameter of the main reinforcement in a slab is 16 mm, the concrete cover to

A) 10 mm
B) 12 mm
C) 14 mm
D) 16 mm
Correct Option: D

Question: Minimum spacing between horizontal parallel reinforcement of different sizes, should not be less

A) One diameter of thinner bar
B) One diameter of thicker bar
C) Twice the diameter of thinner bar
D) None of these
Correct Option: B

Question: For a number of columns constructed in a rcjw, the type of foundation provided, is

A) Footing
B) Raft
C) Strap
D) Strip
Correct Option: D

Question: A singly reinforced concrete beam of 25 cm width and 70 cm effective depth is provided with
A) 20 cm
B) 25 cm
C) 30 cm
D) 35 cm
Correct Option: C

Question: In testing a pile by load test, pile platform is loaded with one and half times the design load and amaximum settlement is noted. The load is gradually removed and the consequent rebound ismeasured. For a safe pile, the net settlement (i.e. total settlement minus rebound) per tonne

A) 10 mm
B) 15 mm
C) 20 mm
D) 25 mm
Correct Option: D

Question: The diameter of main bars in R.C.C. columns, shall not be less than

A) 6 mm
B) 8 mm
C) 10 mm
D) 12 mm
Correct Option: D

Question: If d is the diameter of a bar, ft is allowable tensile stress and fb, is allowable bond stress, the bond

A) ft .d/4fb
B) (π /4). (ft .d/fb)
C) πft .d²/fb
D) (π/4). (ft .d3/fb)
Correct Option: A

Question: An intermediate T-beam reinforced with two layers of tensile steel with clear cover 13 cmencasted with the floor of a hall 12 metres by 7 metres, is spaced at 3 metres from adjoining

A) 300 cm
B) 233 cm
C) 176 cm
D) 236 cm
Correct Option: C

Question: The length of lap in tension reinforcement should not be less than the bar diameter × (actual

A) 18 bar diameters
B) 24 bar diameters
C) 30 bar diameters
D) 36 bar diameters
Correct Option: C

Question: As the percentage of steel increases

A) Depth of neutral axis decreases
B) Depth of neutral axis increases
C) Lever arm increases
D) Lever arm decreases
Correct Option: B

Question: The effective width of a column strip of a flat slab, is

A) One-fourth the width of the panel
B) Half the width of the panel
C) Radius of the column
D) Diameter of the column
Correct Option: B

Question: As per IS : 1343, total shrinkage for a pre-tensioned beam, is

A) 3.0 × 10-2
B) 3.0 × 10-3
C) 3.0 × 10-5
D) 3.5 × 10-5
Correct Option: D

Question: Dimensions of a beam need be changed if the shear stress is more than

A) 10 kg/cm2
B) 15 kg/cm2
C) 20 kg/cm2
D) 25 kg/cm2
Correct Option: C

Question: Based on punching shear consideration, the overall depth of a combined footing under a

A) (Area of the column A × Safe punching stress)/Load on column A
B) (Perimeter of column A × Safe punching stress)/(Load on column A + Upward pressure ×Area of the column)
C) (Perimeter of column A × Safe punching stress)/(Load on column A × Upward pressure ×Area of the column)
D) None of these
Correct Option: B

Question: Pick up the correct statement from the following:

A) A pile is a slender member which transfers the load through its lower end on a strong strata
B) A pile is a slender member which transfers its load to the surrounding soil
C) A pile is a slender member which transfers its load by friction
D) A pile is a cylindrical body of concrete which transfers the load at a depth greater than itswidth
Correct Option: B

Question: In a combined footing if shear stress exceeds 5 kg/cm2, the nominal stirrups

A) 6 legged
B) 8 legged
C) 10 legged
D) 12 legged
Correct Option: D

Question: The weight of reinforced concrete, is generally taken as

A) 2200 kg/m3
B) 2300 kg/m3
C) 2400 kg/m3
D) 2500 kg/m3
Correct Option: C

Question: If W is the load on a circular slab of radius R, the maximum circumferential moment at the centre

A) WR²/16
B) 2WR²/16
C) 3WR²/16
D) Zero
Correct Option: C

Question: If 'W' is weight of a retaining wall and 'P' is the horizontal earth pressure, the factor of safety

A) 1
B) 1.25
C) 1.5
D) 2
Correct Option: C

Question: The effective span of a simply supported slab, is

A) Distance between the centres of the bearings
B) Clear distance between the inner faces of the walls plus twice the thickness of the wall
C) Clear span plus effective depth of the slab
D) None of these
Correct Option: B

Question: In a beam the local bond stress Sb, is equal to

A) Shear force/(Leaver arm × Total perimeter of reinforcement)
B) Total perimeter of reinforcement/(Leaver arm × Shear force)
C) Leaver arm/(Shear force × Total perimeter of reinforcement)
D) Leaver arm/(Bending moment × Total perimeter of reinforcement)
Correct Option: A

Question: A continuous beam shall be deemed to be a deep beam if the ratio of effective span to overall

A) 2.5
B) 2
C) Less than 2
D) Less than 2.5
Correct Option: A

Question: With usual notations the depth of the neutral axis of a balanced section, is given by

A) mc/t = (d - n)/n
B) t/mc = (d - n)/n
C) t/mc = (d + n)/n
D) mc/t = n/(d - n)
Correct Option: D

Question: Pick up the true statement from the following:

A) Plain ceiling provides the best property diffusing light
B) In the absence of beams, it is easier to install piping
C) In the absence of beams, it is easier to paint
D) All the above
Correct Option: D

Question: If the maximum shear stress at the end of a simply supported R.C.C. beam of 16 m effective span is10 kg/cm2, the length of the beam having nominal reinforcement, is

A) 8 cm
B) 6 m
C) 8 m
D) 10 m
Correct Option: C

Question: If the length of a wall on either side of a lintel opening is at least half of its effective span L, theload W carried by the lintel is equivalent to the weight of brickwork contained in an

A) WL/2
B) WL/4
C) WL/6
D) WL/8
Correct Option: C

Question: The section of a reinforced beam where most distant concrete fibre in compression and tension in

A) Balanced section
B) Economic section
C) Critical section
D) All the above
Correct Option: D

Question: The length of the lap in a compression member is kept greater than bar diameter x (Permissible stress in bar / Five times the bond stress) or

A) 12 bar diameters
B) 18 bar diameters
C) 24 bar diameters
D) 30 bar diameters
Correct Option: C

Question: The system in which high tensile alloy steel bars (silica manganese steel) are used as prestressing tendons, is known as

A) Freyssinet system
B) Magnel-Blaton system
C) C.C.L. standard system
D) Lee-McCall system
Correct Option: D

Question: An under-reinforced section means

A) Steel is provided at the underside only
B) Steel provided is insufficient
C) Steel provided on one face only
D) Steel will yield first
Correct Option: D

Question: The angle of repose of a soil is the maximum angle which the outer face of the soil

A) With the horizontal
B) With the vertical
C) With the perpendicular to the inclined plane of the soil
D) None of these
Correct Option: A

Question: In a doubly-reinforced beam if V and ‘t'are stresses in concrete and tension reinforcement, ‘d' is the effective depth and ‘n' is depth of critical neutral axis, the following

A) mc/t = n/(d - n)
B) (m + c)/t = n/(d + n)
C) (t + c)/n = (d + n)/n
D) mc/t = (d - n)/t
Correct Option: A

Question: A raft foundation is provided if its area exceeds the plan area of the building by

A) 0.1
B) 0.2
C) 0.4
D) 0.5
Correct Option: D

Question: In favourable circumstances a 15 cm concrete cube after 28 days, attains a maximum crushing strength

A) 100 kg/cm2
B) 200 kg/cm2
C) 300 kg/cm2
D) 400 kg/cm2
Correct Option: D

Question: If p1 is the vertical intensity of pressure at a depth h on a block of earth weighing w per unit volume and the angle of repose ф, the lateral intensity of pressure p2 is

A) wh (1 - cos ϕ)/(1 + sin ϕ)
B) wh (1 - sin ϕ)/(1 + sin ϕ)
C) wh (1 - tan ϕ)/(1 + tan ϕ)
D) w (1 - cos ϕ)/h (1 + sin ϕ)
Correct Option: B

Question: Pick up the incorrect statement from the following. The intensity of horizontal shear stress at the elemental part of a beam section, is directly proportional to

A) Shear force
B) Area of the section
C) Distance of the C.G. of the area from its neutral axis
D) Moment of the beam section about its neutral axis
Correct Option: D

Question: According to I.S.: 456, 1978 the thickness of reinforced concrete footing on piles at its edges, is kept less than

A) 20 cm
B) 30 cm
C) 40 cm
D) 75 cm
Correct Option: B

Question: An R.C.C. beam of 25 cm width and 50 cm effective depth has a clear span of 6 metres and carries a U.D.L. of 3000 kg/m inclusive of its self weight. If the lever arm constant for the section is 0.865, the maximum intensity of shear stress, is

A) 8.3 kg/cm2
B) 7.6 kg/cm2
C) 21.5 kg/cm2
D) 11.4 kg/cm2
Correct Option: A

Question: The percentage of minimum reinforcement of the gross sectional area in slabs, is

A) 0.001
B) 0.0012
C) 0.0015
D) 0.0018
Correct Option: C

Question: If the permissible compressive stress for a concrete in bending is C kg/m2, the
A) 2800/C
B) 2300/2C
C) 2800/3C
D) 2800/C2
Correct Option: C

Question: An R.C.C. beam not provided with shear reinforcement may develop cracks in its bottom inclined roughly to the horizontal at

A) 25°
B) 35°
C) 45°
D) 55°
Correct Option: C

Question: Cantilever retaining walls can safely be used for a height not more than

A) 3 m
B) 4 m
C) 5 m
D) 6 m
Correct Option: D

Question: The maximum area of tension reinforcement in beams shall not exceed

A) 0.0015
B) 0.015
C) 0.04
D) 0.01
Correct Option: C

Question: The width of the flange of a T-beam should be less than

A) One-third of the effective span of the T-beam
B) Distance between the centres of T-beam
C) Breadth of the rib plus twelve times the thickness of the slab
D) Least of the above
Correct Option: D

Question: For a circular slab carrying a uniformly distributed load, the ratio of the maximum negative to maximum positive radial moment, is

A) 1
B) 2
C) 3
D) 5
Correct Option: B

Question: According to I.S. : 456 specifications, the safe diagonal tensile stress for M 150

A) 5 kg/cm2
B) 10 kg/cm2
C) 15 kg/cm2
D) 20 kg/cm2
Correct Option: A

Question: The width of the flange of a T-beam, which may be considered to act effectively with the rib depends upon

A) Breadth of the rib
B) Overall thickness of the rib
C) Centre to centre distance between T-beams
D) All the above
Correct Option: D

Question: The maximum shear stress (qmax) in a rectangular beam is

A) 1.25 times the average
B) 1.50 times the average
C) 1.75 times the average
D) 2.0 times the average
Correct Option: B

Question: If the sides of a slab simply supported on edges and spanning in two directions are equal, the maximum bending moment is multiplied by

A) 0.2
B) 0.3
C) 0.4
D) 0.5
Correct Option: D

Question: If K is a constant depending upon the ratio of the width of the slab to its effective span l, x is the distance of the concentrated load from the nearer support, bw is the width of the area of contact of the concentrated load measured parallel to the supported edge, the

A) K/x (1 + x/d) + bw
B) Kx (1 - x/I) + bw
C) Kx (1 + x/I) + bw
D) All the above
Correct Option: B

Question: The length of the straight portion of a bar beyond the end of the hook, should be at

A) Twice the diameter
B) Thrice the diameter
C) Four times the diameter
D) Seven times the diameter
Correct Option: D

Question: If the maximum bending moment of a simply supported slab is M Kg.cm, the effective depth of the slab is (where Q is M.R. factor)

A) M/100Q
B) M/10√ Q
C) √(M/Q)
D) √(M/100Q)
Correct Option: D

Question: If 'H' is the overall height of a retaining wall retaining a surcharge, the width of the base slab usually provided, is

A) 0.3 H
B) 0.4 H
C) 0.5 H
D) 0.7 H
Correct Option: D

Question: If Sb, is the average bond stress on a bar of diameter ,d' subjected to maximum stress 't\ the length of the embedment T is given by

A) I= dt/Sb
B) I = dt/2Sb
C) I = dt/3Sb
D) I = dt/4Sb
Correct Option: D

Question: If diameter of a reinforcement bar is d, the anchorage value of the hook is

A) 4d
B) 8d
C) 12d
D) 16d
Correct Option: D

Question: As per I.S. 456 - 1978, the pH value of water shall be

A) Less than 6
B) Equal to 6
C) Not less than 6
D) Equal to 7
Correct Option: C

Question: For M 150 mix concrete, according to I.S. specifications, local bond stress, is

A) 5 kg/cm2
B) 10 kg/cm2
C) 15 kg/cm2
D) 20 kg/cm2
Correct Option: B

Question: The minimum cube strength of concrete used for a pre-stressed member, is

A) 50 kg/cm2
B) 150 kg/cm2
C) 250 kg/cm2
D) 350 kg/cm2
Correct Option: B

Question: If d and n are the effective depth and depth of the neutral axis respectively of a singly reinforced beam, the lever arm of the beam, is

A) d
B) n
C) d + n/3
D) d - n/3
Correct Option: D

Question: The weight of a foundation is assumed as

A) 5% of wall weight
B) 7% of wall weight
C) 10% of wall weight
D) 12% of wall weight
Correct Option: C

Question: An R.C.C. column of 30 cm diameter is reinforced with 6 bars 12 mm q> placed symmetrically along the circumference. If it carries a load of 40, 000 kg axially, the stress is

A) 49.9 kg/cm2
B) 100 kg/cm2
C) 250 kg/cm2
D) 175 kg/cm2
Correct Option: A

Question: If the diameter of longitudinal bars of a square column is 16 mm, the diameter of lateral ties should not be less than

A) 4 mm
B) 5 mm
C) 6 mm
D) 8 mm
Correct Option: B

Question: Design of R.C.C. cantilever beams, is based on the resultant force at

A) Fixed end
B) Free end
C) Mid span
D) Mid span and fixed support
Correct Option: A

Question: In a combined footing if shear stress does not exceed 5 kg/cm2, the nominal

A) 6 legged
B) 8 legged
C) 10 legged
D) 12 legged
Correct Option: B

Question: The maximum shear stress (q) in concrete of a reinforced cement concrete beam is

A) Shear force/(Lever arm x Width)
B) Lever arm/(Shear force x Width)
C) Width/(Lever arm x Shear force)
D) (Shear force x Width)/Lever arm
Correct Option: A

Question: An R.C.C. column is treated as long if its slenderness ratio is greater than

A) 30
B) 35
C) 40
D) 50
Correct Option: D

Question: The thickness of base slab of a retaining wall generally provided, is

A) One half of the width of the stem at the bottom
B) One-third of the width of the stem at the bottom
C) One fourth of the width of the steam at the bottom
D) Width of the stem at the bottom
Correct Option: D

Question: Design of R.C.C. simply supported beams carrying U.D.L. is based on the resultant

A) Supports
B) Mid span
C) Every section
D) Quarter span
Correct Option: B

Question: If the maximum shear stress at the end of a simply supported R.C.C. beam of 6 m effective span is 10 kg/cm2, the share stirrups are provided for a distance V from either end

A) 50 cm
B) 100 cm
C) 150 cm
D) 200 cm
Correct Option: C

Question: Distribution reinforcement in a simply supported slab, is provided to distribute

A) Load
B) Temperature stress
C) Shrinkage stress
D) All the above
Correct Option: D

Question: Distribution of shear intensity over a rectangular section of a beam, follows:

A) A circular curve
B) A straight line
C) A parabolic curve
D) An elliptical curve
Correct Option: C

Question: In a singly reinforced beam, if the permissible stress in concrete reaches earlier than that in steel, the beam section is called

A) Under-reinforced section
B) Over reinforced section
C) Economic section
D) Critical section
Correct Option: B

Question: If the size of a column is reduced above the floor, the main bars of the columns,

A) Continued up
B) Bent inward at the floor level
C) Stopped just below the floor level and separate lap bars provided
D) All the above
Correct Option: D

Question: The minimum number of main steel bars provided in R.C.C.

A) Rectangular columns is 4
B) Circular columns is 6
C) Octagonal columns is 8
D) All the above
Correct Option: D

Question: A short column 20 cm x 20 cm in section is reinforced with 4 bars whose area of cross section is 20 sq. cm. If permissible compressive stresses in concrete and steel are 40 kg/cm2 and 300 kg/cm2, the Safe load on the column, should not exceed

A) 4120 kg
B) 41,200 kg
C) 412,000 kg
D) None of these
Correct Option: B

Question: If T and R are tread and rise respectively of a stair, then

A) 2R + T = 60
B) R + 2T = 60
C) 2R + T = 30
D) R + 2T = 30
Correct Option: A

Question: For stairs spanning T metres longitudinally between supports at the bottom and top of a flight carrying a load w per unit horizontal area, the maximum bending moment per

A) w/2/4
B) w/2/8
C) w/2/12
D) w/2/16
Correct Option: D

Question: In a singly reinforced beam, the effective depth is measured from its compression

A) Tensile edge
B) Tensile reinforcement
C) Neutral axis of the beam
D) Longitudinal central axis
Correct Option: B

Question: Though the effective depth of a T-beam is the distance between the top compression edge to the centre of the tensile reinforcement, for heavy loads, it is taken as

A) 1/8th of the span
B) 1/10th of the span
C) 1/12th of the span
D) 1/16th of the span
Correct Option: C

Question: If jd is the lever arm and ZO is the total perimeter of reinforcement of an R.C.C. beam, the bond stress at the section having Q shear force, is

A) Q/2jdΣO
B) Q/3jdΣO
C) Q/jdΣO
D) 2 x Q/jdΣO
Correct Option: C

Question: On piles, the drop must be at least

A) 80 cm
B) 100 cm
C) 120 cm
D) 140 cm
Correct Option: C

Question: Steel beam theory is used for

A) Design of simple steel beams
B) Steel beams encased in concrete
C) Doubly reinforced beams ignoring compressive stress in concrete
D) Beams if shear exceeds 4 times allowable shear stress
Correct Option: C

Question: In a pre-stressed beam carrying an external load W with a bent tendon is having angle of inclination θ and pre-stressed load P. The net downward load at the centre is

A) W - 2P cos θ
B) W - P cos θ
C) W - P sin θ
D) W - 2P sin θ
Correct Option: D

Question: To have pressure wholly compressive under the base of a retaining wall of width b, the resultant of the weight of the wall and the pressure exerted by the retained, earth should

A) b/3
B) b/4
C) b/5
D) b/6
Correct Option: D

Question: The diameter of longitudinal bars of a column should never be less than

A) 6 mm
B) 8 mm
C) 10 mm
D) 12 mm
Correct Option: D

Question: Post tensioning system

A) Was widely used in earlier days
B) Is not economical and hence not generally used
C) Is economical for large spans and is adopted now a days
D) None of these
Correct Option: D

Question: The number of treads in a flight is equal to

A) Risers in the flight
B) Risers plus one
C) Risers minus one
D) None of these
Correct Option: C

Question: The amount of reinforcement for main bars in a slab, is based upon

A) Minimum bending moment
B) Maximum bending moment
C) Maximum shear force
D) Minimum shear force
Correct Option: B

Question: The shear reinforcement in R.C.C. is provided to resist

A) Vertical shear
B) Horizontal shear
C) Diagonal compression
D) Diagonal tension
Correct Option: D

Question: A simply supported beam 6 m long and of effective depth 50 cm, carries a uniformly distributed load 2400 kg/m including its self weight. If the lever arm factor is 0.85 and permissible tensile stress of steel is 1400 kg/cm2, the area of steel required, is

A) 14 cm2
B) 15 cm2
C) 16 cm2
D) 17 cm2
Correct Option: C

Question: The anchorage value of a hook is assumed sixteen times the diameter of the bar if the angle of the bend, is

A) 30°
B) 40°
C) 45°
D) All the above
Correct Option: D

Question: A circular slab subjected to external loading, deflects to form a

A) Semi-hemisphere
B) Ellipsoid
C) Paraboloid
D) None of these
Correct Option: C

Question: If a rectangular pre-stressed beam of an effective span of 5 meters and carrying a total load 3840 kg/m, is designed by the load balancing method, the central dip of the

A) 5 cm
B) 10 cm
C) 15 cm
D) 20 cm
Correct Option: B

Question: The radius of a bar bend to form a hook, should not be less than

A) Twice the diameter
B) Thrice the diameter
C) Four times the diameter
D) Five times the diameter
Correct Option: A

Question: The reinforced concrete beam which has width 25 cm, lever arm 40 cm, shear force 6t/cm2, safe shear stress 5 kg/cm2 and B.M. 24 mt,

A) Is safe in shear
B) Is unsafe in shear
C) Is over safe in shear
D) Needs redesigning
Correct Option: B

Question: If a bent tendon is required to balance a concentrated load W at the centre of the span L, the central dip h must be at least

A) WL/P
B) WL/2P
C) WL/3P
D) WL/4P
Correct Option: D

Question: If the effective length of a 32 cm diameter R.C.C. column is 4.40 m, its slenderness

A) 40
B) 45
C) 50
D) 55
Correct Option: D

Question: If W is total load per unit area on a panel, D is the diameter of the column head, L is the span in two directions, then the sum of the maximum positive bending moment and average of the negative bending moment for the design of the span of a square flat slab,

A) WL/12 (L - 2D/3)2
B) WL/10 (L + 2D/3)2
C) WL/10 (L - 2D/3)2
D) WL/12 (L - D/3)2
Correct Option: C

Question: Piles are usually driven by

A) Diesel operated hammer
B) Drop hammer
C) Single acting steam hammer
D) All the above
Correct Option: D

Question: In a combined footing for two columns carrying unequal loads, the maximum hogging bending moment occurs at

A) Less loaded column
B) More loaded column
C) A point of the maximum shear force
D) A point of zero shear force
Correct Option: D

Question: If the average bending stress is 6 kg/cm2 for M 150 grade concrete, the length of embedment of a bar of diameter d according to I.S. 456 specifications, is

A) 28 d
B) 38 d
C) 48 d
D) 58 d
Correct Option: D

Question: The live load to be considered for an inaccessible roof, is

A) Nil
B) 75 kg/m2
C) 150 kg/cm2
D) 200 kg/m2
Correct Option: B

Question: A pile of length 'L' carrying a uniformly distributed load ‘W' per metre length is suspended at the centre and from other two points 0.15 L from either end ; the maximum

A) WL2/15
B) WL2/30
C) WL2/60
D) WL2/90
Correct Option: D

Question: An R.C.C. roof slab is designed as a two way slab if

A) It supports live loads in both directions
B) The ratio of spans in two directions is less than 2
C) The slab is continuous over two supports
D) The slab is discontinuous at edges
Correct Option: B

Question: The design of a retaining wall assumes that the retained earth

A) Is dry
B) Is free from moisture
C) Is not cohesive
D) All the above
Correct Option: D

Question: A foundation rests on

A) Base of the foundation
B) Sub-grade
C) Foundation soil
D) Both (b) and (c)
Correct Option: D

Question: The advantage of a concrete pile over a timber pile, is

A) No decay due to termites
B) No restriction on length
C) Higher bearing capacity
D) All the above
Correct Option: D

Question: For stairs spanning horizontally, the minimum waist provided is

A) 4 cm
B) 6 cm
C) 8 cm
D) 12 cm
Correct Option: D

Question: The toe projection of foundation slabs is taken

A) As one third of the base
B) As one sixth of overall height of the wall
C) Equal to heel slab
D) Below ground surface
Correct Option: A

Question: The horizontal portion of a step in a stairs case, is known as

A) Rise
B) Flight
C) Winder
D) Tread
Correct Option: D

Question: The maximum ratio of span to depth of a cantilever slab, is

A) 8
B) 10
C) 12
D) 16
Correct Option: C

Question: [A + (m - 1)Asc] known as equivalent concrete area of R.C.C. is given by

A) Modular ratio method
B) Load factor method
C) Ultimate load method
D) None of these
Correct Option: A

Question: If permissible working stresses in steel and concrete are respectively 1400 kg/cm2 and 80 kg/cm2 and modular ratio is 18, in a beam reinforced in tension side and of width 30 cm and having effective depth 46 cm, the lever arms of the section, is

A) 37 cm
B) 38 cm
C) 39 cm
D) 40 cm
Correct Option: D

Question: A pre-stressed concrete member

A) Is made of concrete
B) Is made of reinforced concrete
C) Is stressed after casting
D) Possesses internal stresses
Correct Option: D

Question: A flat slab is supported

A) On beams
B) On columns
C) On beams and columns
D) On columns monolithically built with slab
Correct Option: D

Question: A foundation is called shallow if its depth, is

A) One-fourth of its width
B) Half of its width
C) Three-fourth of its width
D) Equal to its width
Correct Option: D

Irrigation Engineering

Question: The consumptive use of water for a crop

A) Is measured as the volume of water per unit area
B) Is measured as depth of water on irrigated area
C) May be supplied partly by precipitation and partly by irrigation
D) All the above
Correct Option: D

Question: Canals taken off from ice-fed perennial rivers, are known

A) Permanent canals
B) Ridge canals
C) Perennial canals
D) Inundation canals
Correct Option: C

Question: In gravity canals, F.S.L. is

A) Always at the ground level
B) Always below the ground level
C) Generally 4 to 5 metres above the ground level
D) Only a few cm above the ground level
Correct Option: D

Question: The field capacity of a soil is 25%, its permanent wilting point is 15% and specific dry unity weight is 1.5. If the depth of root zone of a crop, is 80 cm, the storage capacity of the soil, is

A) 8 cm
B) 10 cm
C) 12 cm
D) 14 cm
Correct Option: C

Question: If water table is comparatively high, the irrigation canal becomes useless, due to

A) Large amount of seepage
B) Water logging of the cultivated areas
C) Uncertain water demand
D) All the above
Correct Option: D

Question: If A is the area of the surface, x is the depth of its C.G. from the surface of the water and u is the density of water, then

A) Total pressure on the surface is equal to wx
B) Depth of the point at which total pressure acts is equal to its moment of inertia divided by
C) Depth of the centre of pressure is 2/3H vertically below the surface
D) All the above
Correct Option: D

Question: In a syphon aqueduct

A) Drainage passes over the canal and F.S.L. of the canal is below the bottom of the drainage trough
B) Drainage passes over the canal and F.S.L. of the canal is above the bottom of the drainage trough
C) Canal passes over the drainage and H.F.L. of the drainage is above the bottom of the canal trough
D) Canal passes over the drainage and H.F.L. of the drainage is below the bottom of the canal trough
Correct Option: C

Question: If the height of the hydraulic gradient line above the floor of thickness t is h and the specific gravity of the material of the floor is G, the minimum thickness t of the floor downstream of the crest-wall, is given by the equation

A) t = (h + 1)/(G + t)
B) t = (h - 1)/(G + t)
C) t = (h - 1)/(G - t)
D) t = (h + 1)/G
Correct Option: C

Question: To hold hydraulic jumps, baffle walls are provided in

A) Sarda type falls
B) English type falls
C) Montague type falls
D) Vertical type falls
Correct Option: B

Question: Pick up the correct sequence of the part of a canal system from the following

A) Head work-distributary-branch canal-minor
B) Head works-main canal-branch canal-distributary-minor
C) Head works-main canal-branch canal-minor-distributary
D) Heads works-branch canal-main canal distributary, minor
Correct Option: B

Question: The field capacity of a soil depends upon

A) Capillary tension in soil
B) Porosity of soil
C) Both (a) and (b)
D) Neither (a) nor (b)
Correct Option: C

Question: The water face of the guide banks, is protected by

A) One men stone pitching
B) Two man stone pitching
C) Three man stone pitching
D) Four man stone pitching
Correct Option: A

Question: Pick up the correct statement from the following

A) Escapes are essential safety valves in a canal system
B) The escapes must lead the surplus water to natural drainages
C) The escapes are aligned to take advantage of contours of lower values
D) All the above
Correct Option: D

Question: For a unique design of a channel by Kennedy's theory

A) Its breadth must only be known
B) Its depth must only be known
C) Its breadth and depth ratio must only be known
D) All the above
Correct Option: C

Question: The structure constructed to allow drainage water to flow under pressure through an inverted syphon below a canal, is called

A) Syphon
B) Super passage
C) Super-aqueduct
D) Syphon aqueduct
Correct Option: D

Question: The main cause of silting up a channel,

A) Non-regime section
B) Inadequate slope
C) Defective head regulator
D) All the above
Correct Option: D

Question: Pick up the correct statement from the following:

A) Gravity water is harmful to crops
B) Hygroscopic water remains attached to soil molecules by chemical bond
C) Capillary moisture held in the soil pores against gravity by surface tension, is utilised by plants
D) All the above
Correct Option: C

Question: A river training work is generally required when the river is

A) Meandering
B) Aggrading
C) Degrading
D) All the above
Correct Option: A

Question: When a canal flowing under pressure is carried below a natural drainage such that its F.S.L. does not touch the underside of the supporting structure, the structure so provided, is called

A) Syphon
B) Aqueduct
C) Super passage
D) Syphon-aqueduct
Correct Option: C

Question: Pick up the correct statement from the following

A) In a level crossing, a crest with its top at the canal F.S.L. is provided across the drainage at its up-stream junction with canal
B) In a level crossing a regulator is provided across the drainage at its down-stream
C) In a level crossing, a cross regulator is provided on the canal below the crossing
D) All the above
Correct Option: D

Question: In a Sarda type fall, the rectangular crest, may be used for discharge upto

A) 6 cumecs
B) 10 cumecs
C) 14 cumecs
D) 20 cumecs
Correct Option: C

Question: The measure to remove water logging of land, is

A) To reduce percolation from canals and water courses
B) To increase outflow from the ground water reservoir
C) Both (a) and (b)
D) Neither (a) nor (b)
Correct Option: C

Question: Borrow pits should preferably be located in

A) Field on the left side of the canal
B) Field on the right side of the canal
C) Fields on both sides of the canal
D) Central half width of the section of the canal
Correct Option: D

Question: The sinuosity of a meander is the ratio of

A) Meander length and the width of meander
B) Meander length and half width of the river
C) Curved length and the straight distance
D) None of these
Correct Option: C

Question: Pick up the correct statement from the following:

A) If the flexibility is more than one, the outlet is hyper-proportional
B) If the setting of an outlet is higher than that required for proportionality, the outlet is hyperproportional
C) If the flexibility is zero, it is a rigid module
D) All the above
Correct Option: D

Question: According to Khosla, the exits gradient of surface flow

A) Depends upon the b/d ratio
B) Is independent of the b/d ratio
C) Is independent of the depths of d/s cut off walls
D) None of these
Correct Option: A

Question: A hydraulic structure is designed to withstand

A) Seepage forces
B) Hydraulic jump
C) Hydraulic pressure
D) All the above
Correct Option: D

Question: If the optimum depth of kor watering for a crop is 15.12 cm, the outlet factor for the crop for four week period in hectares per cumec, is

A) 1000
B) 1200
C) 1400
D) 1600
Correct Option: D

Question: In Montague type fall

A) A straight glacis is provided
B) A circular glacis is provided
C) A parabolic glacis is provided
D) No glacis is provided
Correct Option: C

Question: Cross regulators in main canals are provided

A) To regulate water supply in the distributaries
B) To increase water head upstream when a main canal is running with low supplies
C) To overflow excessive flow water
D) None of these
Correct Option: B

Question: According to Lacey, depth of scour in a river depends upon the straightness of the reach. If D is the depth of scour in regime flow in a right angled bend, it is

A) 1.25 D
B) 1.50 D
C) 1.75 D
D) 2.00 D
Correct Option: D

Question: According to Lacey, in regime conditions

A) Silt is kept in suspension by vertical components of eddies
B) Entire cross-section of the channel is generated at all points by the forces normal to the wetted perimeter
C) Both (a) and (b)
D) Neither (a) nor (b)
Correct Option: C

Question: The most suitable section of a lined canal, is

A) Triangular section with circular bottom for small canals
B) Trapezoidal section with rounded corners for large canals
C) Both (a) and (b)
D) None of these
Correct Option: C

Question: An outlet is said to be proportional if its flexibility, is

A) Zero
B) Less than one
C) More than one
D) One
Correct Option: D

Question: The level of the floor of a syphon aqueduct can be obtained

A) By subtracting the depth of the culvert from the canal bed level
B) By subtracting the thickness of culvert plus the depth of the culvert from the canal bed
C) Both (a) and (b)
D) None of these
Correct Option: B

Question: If the straight sides of a triangular section of a lined canal with circular bottom of radius D, make an angle 0 with horizontal, the hydraulic mean depth is

A) D
B) D/2
C) D/3
D) D/5
Correct Option: B

Question: According to Bligh's creep theory, percolating water flows along

A) Straight path under the foundation of the dam
B) Circular path under the foundation of the dam
C) The outline of the base of the foundation of the dam
D) None of these
Correct Option: D

Question: For a standing crop, the consumptive use of water is equal to the depth of water

A) Transpired by the crop
B) Evaporated by the crop
C) Transpired and evaporated by the crop
D) Used by the crop in transpiration, evaporation and also the quantity of water evaporated from adjacent soil
Correct Option: D

Question: Bed bars in a canal are provided

A) To watch the general behaviour of canal
B) To measure the discharge
C) To raise the supply level
D) To control the silting
Correct Option: A

Question: The velocity of drainage water in the barrels of a syphon-aqueduct, is normally limited to

A) 1 to 2 m per second
B) 2 to 3 m per second
C) 3 to 4 m per second
D) 4 to 5 m per second
Correct Option: B

Question: For the design of major hydraulic structures on the canals, the method generally preferred to, is based on

A) Bligh's theory
B) Electrical analogy method
C) The relaxation method
D) Khosla's method of independent variables
Correct Option: D

Question: Pick up the incorrect statement from the following:

A) In free flooding irrigation, water is admitted at one corner of a field and is allowed to spread over the entire area
B) In check method of irrigation, the field is divided into smaller compartments and water is admitted to each in turn
C) In furrow irrigation water is admitted between the rows of plants in the field
D) None of these
Correct Option: D

Question: Pick up the incorrect statement from the following

A) Side walls of a venturi head flume are splayed out from the end of the throat at 1 : 10 for a length of 4.5 m
B) Length of side walls should be such that the width of the flume is made equal to 2/3rd the bed width of the distributary
C) Once the width of the flume becomes 2/3rd of the width of the distributary, the splayed walls are increased to 1 in 3 to get full bed width
D) None of these
Correct Option: D

Question: Irrigation canals are generally aligned along

A) Ridge line
B) Contour line
C) Valley line
D) Straight line
Correct Option: A

Question: In a canal syphon, the flow is

A) Under atmospheric pressure
B) Pipe flow
C) With critical velocity
D) Under negative pressure
Correct Option: B

Question: Pick up the correct statement from the following

A) Approach of the water line in a flumed channel section should not be steeper than 22.5°
B) Departure of the water line from a flumed channel section should not be steeper than 30°
C) Approach of the water line should not be steeper than 30° and departure line not steeper than 22.5° in a flumed channel section
D) Approach and departure of the water line in a flumed channel section, should not be steeper than 22.5°
Correct Option: C

Question: The main function of a diversion head works of a canal from a river, is

A) To remove silt
B) To control floods
C) To store water
D) To raise water level
Correct Option: D

Question: Pick up the correct statement from the following:

A) The full supply level of a canal should be above ground level
B) According to Lacey, regime conditions require a particular slope for a given discharge and silt factor
C) In case the ground slope is less than the required bed slope, the silt factor must be reduced by permitting the entry of coarse silt
D) All the above
Correct Option: D

Question: If d1 is the depth of cutting, d2 is the height of the bank from bed level r2 : 1 and r1 : 1 are the slopes in filling and cutting respectively, the horizontal distance n between the bed and bank, is

A) x = r1 d1
B) x = r2 d2
C) x = d1 / r1
D) x = d2 / r2
Correct Option: B

Question: If V0 is the critical velocity of a channel, its silt transporting power, according to Kennedy, is proportional to

A) V0 1/2
B) V0 3/2
C) V0 5/2
D) V0 7/2
Correct Option: C

Question: Regime conditions in a channel may occur if

A) Discharge is constant
B) Channel flows uniformly in incoherent alluvium as that transported in suspension
C) Silt grade and silt charge are constant
D) All the above
Correct Option: D

Question: A river is said to be of

A) Aggrading type if it builds up its bed to a certain slope
B) Degrading type if it cuts its bed to a certain slope
C) Meandering type if it flows in sinuous curve
D) All the above
Correct Option: D

Question: The ratio of the rate of change of discharge of an outlet and parent channel, is known as

A) Efficiency
B) Sensitivity
C) Flexibility
D) Modular limit
Correct Option: C

Question: The width of a dowla is generally kept between 30 to 60 cm and its height above the road level should invariably be more than

A) 10 cm
B) 20 cm
C) 30 cm
D) 40 cm
Correct Option: C

Question: Pick up the correct statement from the following:

A) Water table generally follows the ground surface above it with a few exceptions
B) Static level of water in an open well indicates the position of the water table
C) At water table, hydrostatic pressure is zero
D) All the above
Correct Option: D

Question: Lacey's equation for calculating flood discharge in rivers, is

A) V= 10.8 R1/2 S1/2
B) V= 10.8 R2/3 S1/2
C) V= 10.8 R2/3 S1/3
D) V= 10.8 R1/3 S2/3
Correct Option: C

Question: A deficit of sediments in flowing water may cause a river

A) Meandering type
B) Aggrading type
C) Degrading type
D) Sub-critical type
Correct Option: C

Question: Side slopes generally kept for canals in loam soil, are:

A) 1 : 1 in cutting and 11/2 : 1 in filling
B) 11/2 : 1 in cutting and 2 : 1 in filling
C) Neither (a) nor (b)
D) Both (a) and (b)
Correct Option: D

Question: For the stability of a structure against seepage pressure according to Khosla's creep theory, the critical gradient is

A) Zero
B) 0.25
C) 0.5
D) 1
Correct Option: D

Question: If B and d are the bed width and depth of a channel in metres, the combined losses due to evaporation and seepage in cumecs per kilometre length of the channel, is

A) (1/50) x (B + d)2/3
B) (1/100) x (B + d)2/3
C) (1/150) x (B + d)2/3
D) (1/200) x (B + d)2/3
Correct Option: D
Question: The length of a meander is the distance along the river between the tangent point of one curve to the tangent point of

A) Reverse curve
B) Next curve of the same order
C) Reverse curve plus the width of the river
D) None of these
Correct Option: B

Question: The top of the capillary zone

A) Lies below the water table at every point
B) Lies above the water table at every point
C) Coincides the water table at every point
D) None of these
Correct Option: B

Question: The depth of rice root zone, is

A) 50 cm
B) 60 cm
C) 80 cm
D) 90 cm
Correct Option: D

Question: If the irrigation efficiency is 80%, conveyance losses are 20% and the actual depth of watering is 16 cm, the depth of water required at the canal outlet, is

A) 10 cm
B) 15 cm
C) 20 cm
D) 25 cm
Correct Option: D

Question: In a barrage, the crest level is kept

A) Low with large gates
B) High with large gates
C) High with no gates
D) Low with no gates
Correct Option: A

Question: An outlet which maintains a constant discharge irrespective of fluctuation in the water levels of the supplying channel or water course, is known as

A) Non-modular outlet
B) Semi-modular outlet
C) Flexible modular outlet
D) Right modular outlet
Correct Option: D

Question: In case of a trapezoidal notch fall

A) Top length of the piers should not be less than their thickness
B) Splay upstream from the notch section is 45°
C) Splay downstream from the notch section is 22%°
D) All the above
Correct Option: D

Question: Finally formed berms in canals are provided for

A) Protection of banks erosion by the waves
B) Control of seepage losses
C) Strengthening of banks
D) All the above
Correct Option: D

Question: Process of meandering is due to

A) Sediment load of streams
B) Discharge and hydraulic properties of streams
C) Relative erodibility of the bed and banks
D) All the above
Correct Option: D

Question: The ratio of the rate of change of discharge of an outlet to the rate of change in level of water surface in a distributary at its normal depth, is known as

A) Efficiency
B) Sensitivity
C) Flexibility
D) Modular limit
Correct Option: B

Question: The ratio of the head recovered to the head put in, is known as

A) Efficiency
B) Sensitivity
C) Flexibility
D) Modular limit
Correct Option: A

Question: If H and d are the water depth and drop in the bed level at a Sarda fall, the width B of the trapezoidal crest, is given by

A) B = 0.22 √(H+ d)
B) B = 0.33√(H+ d)
C) B = 0.44√(H+ d)
D) B = 0.55√(H+ d)
Correct Option: D

Question: The scour depth D of a river during flood, may be calculated from the Lacey's equation

A) D = 0.47 (Q/f)
B) D = 0.47 (Q/f)1/2
C) D = 0.47 (Q/f)1/3
D) D = 0.47 (Q/f)2/3
Correct Option: C

Question: For the conditions enumerated to provide a crossing at C1 You will probably provide

A) An aqueduct
B) A super-passage
C) A syphon aqueduct
D) None of these
Correct Option: B

Question: When a canal and a drainage approach each other at the same level, the structure so provided, is

A) An aqueduct
B) A syphon
C) A level crossing
D) Inlet and outlet
Correct Option: C

Question: The difference in level between the top of a bank and supply level in a canal, is

A) Berm
B) Free board
C) Height of bank
D) None of these
Correct Option: B

Question: If L is total length of a canal in kilometres, P is total perimeter of its lining in metres and C is the cost of lining per square metre, the additional expenditure involved on

A) 100 PLC
B) PLC/1000
C) PL/1000C
D) PC/100L
Correct Option: A

Question: The crest level of a canal diversion head work, depends upon

A) F.S.L. of the canal
B) Discharge perimeters
C) Pond level
D) All the above
Correct Option: D

Question: The most suitable location of a canal head work, is

A) Boulders stage of the river
B) Delta stage of the river
C) Rock stage of the river
D) Trough stage of the river
Correct Option: D

Question: The length and width of a meander and also the width of the river, vary roughly as

A) Square root of the discharge
B) Discharge
C) Square of the discharge
D) Cube of the discharge
Correct Option: A

Question: A land is said to be water-logged if its soil pores within

A) A depth of 40 cm are saturated
B) A depth of 50 cm are saturated
C) Root zone of the crops are saturated
D) All the above
Correct Option: C

Question: V' and 'R are the regime mean velocity and hydraulic mean depth respectively in metres. Lacey's silt factor 'f' is

A) 2V2/√3R
B) 3 V2/4R
C) 5 V2/2R
D) 2 V2/5R
Correct Option: C

Question: A counter berm is

A) A horizontal benching provided on the inside slope
B) A horizontal benching provided on the outside slope
C) A vertical benching provided on the outer edge of the bank
D) A vertical benching provided on the inner edge of the bank
Correct Option: C

Question: While deciding the alignment of a proposed canal taking off from a river at B, three alignments of approximately equal lengths are available. These cross a drainages at C1, C2and C3 where drainage bed levels C1 > C2 > C3, you will provide at site C3

A) An aqueduct
B) A syphon aqueduct
C) A super passage
D) A syphon
Correct Option: A

Question: Canals constructed for draining off water from water logged areas, are known

A) Drains
B) Inundation canals
C) Valley canals
D) Contour canals
Correct Option: A

Question: The Lacey's regime velocity is proportional to

A) R1/2 S3/4
B) Q3/4 S1/3
C) R3/4 S1/3
D) R2/3 S1/2
Correct Option: C

Question: A fall in a canal bed is generally provided, if

A) Ground slope exceeds the designed bed slope
B) Designed bed slope exceeds the ground slope
C) Ground slope is practically the same as the designed bed slope
D) None of these
Correct Option: A

Question: If the straight sides of a triangular section of a lined canal with circular bottom of radius R, make an angle 6 with horizontal, the perimeter of the canal is

A) R (θ + tan θ)
B) 2R (θ + tanθ)
C) R (θ + cosθ)
D) 2R (θ + COSθ)
Correct Option: D

Question: According to G.W. Pickles the effect of confining the flood water of a river between levee, is to increase

A) Rate of flood wave
B) Water surface elevation during floods
C) Maximum discharge
D) Surface slope of streams above the levied portion
Correct Option: D

Question: F.S.L. of a canal at its head with respect to parent channel is kept

A) At the same level
B) 15 cm lower
C) 15 cm higher
D) None of these
Correct Option: B

Question: The depth of the crest of a scouring sluice below the crest of a head regulator, is generally kept

A) 0.20 m
B) 1.20 m
C) 2.20 m
D) 3.20 m
Correct Option: B

Question: Bligh's theory of seepage assumes

A) Equal weightage to the horizontal and vertical creep
B) More weightage to horizontal creep than vertical creep
C) Less weightage to horizontal creep than vertical creep
D) Loss of head follows the sine curve
Correct Option: A

Question: If D1 and D2 are depths of water upstream and downstream of a hydraulic jump, the loss of head at the jump, is

A) (D2- D1)3/D1D2
B) (D2- D1)3/2D1D2
C) (D2- D1)3/3D1D2
D) (D2- D1)3/4D1D2
Correct Option: D
Question: Garnett's diagrams are used for graphical solution of design equations of a canal by

A) Lacey's theory
B) Kennedy's theory
C) Gibb's theory
D) Lindlay theory
Correct Option: B

Question: To control the silt entry into a distributary at head regulator, King's vanes are provided which are the walls

A) Of R.C.C. or steel plate 8 cm thick
B) Of height 'Ard to %th the depth of water in the main canal
C) Spaced at interval of 1% times their heights
D) All the above
Correct Option: D

Question: Effective precipitation for a crop may be defined as

A) Total precipitation minus the loss due to evaporation
B) Total precipitation minus the loss due to infiltration
C) Total precipitation during the crop period
D) Available water stored in soil within root zone of the crop
Correct Option: D

Question: If straight sides of a triangular section of a lined canal with circular bottom of radius R, make an angle θ with horizontal, the area of its cross-section, is

A) R (θ + tan θ)
B) R (θ + cot θ)
C) R2 (θ + tanθ)
D) R2(θ + cotθ)
Correct Option: D

Question: The state of the soil when plants fail to extract sufficient water for their requirements, is

A) Maximum saturated point
B) Permanent wilting point
C) Ultimate utilisation point
D) None of these
Correct Option: D

Question: The useful moisture of soil, is equal to its

A) Field capacity
B) Saturation capacity
C) Moisture content at permanent wilting point
D) Difference between filed capacity and permanent wilting point within the root zone of
Correct Option: D

Question: Groynes are generally built

A) Perpendicular to the bank
B) Inclined up stream up to 30°
C) Inclined downstream upto 30°
D) All the above
Correct Option: B

Question: Useful soil moisture for plant growth, is

A) Capillary water
B) Gravity water
C) Hygroscopic water
D) Chemical water
Correct Option: A

Question: A minimum of 90 cm free board is provided if the discharge in the canal is between

A) 30 to 33 cumecs
B) 30 to 60 cumecs
C) Over 60 cumecs
D) Over 100 cumecs
Correct Option: C

Question: According to Kennedy, the critical velocity (V0) in metres in a channel is the mean velocity which keeps the channel free from silting or scouring. Its value is given by (where m is critical velocity ratio and D is the depth of the channel).

A) V0 = 0.84 mD064
B) V0 = 0.55 mD064
C) V0 = 0.84 mD054
D) V0 = 0.55 mD054
Correct Option: B

Question: For diversion of flood water of rivers, the type of canal constructed, is

A) Ridge canal
B) Perennial canal
C) Inundation canal
D) Canal
Correct Option: C

Question: Lane's weighted creep theory assumes

A) Equal weightage to horizontal and vertical creeps
B) Double weightage to horizontal creep and one weightage to vertical creep
C) Triple weightage to horizontal creep and one weightage to vertical creep
D) Triple weightage to vertical creep and one weightage to horizontal creep
Correct Option: D

Question: Solution of Laplacian equation in three dimensions dzф/dx2 + d2ф/dy2 + dzф/dz2 = 0 of water in a syphon, is done by

A) Analytical method
B) Khosla's method
C) Method of relaxation
D) Unwin's method
Correct Option: C

Question: In north Indian Plains, optimum depth of kor watering for wheat, is

A) 23.0 cm
B) 19.0 cm
C) 17.5 cm
D) 13.5 cm
Correct Option: D

Question: A water-logged land is found suitable for cultivation due to

A) Ease of tillage for preparation of the field for optimum condition of germination
B) Absence of aeration of soil from root zone of the plant
C) Regular supply of water to plants from the water table by capillary action
D) None of these
Correct Option: D

Question: Attracting groynes are built

A) Perpendicular to the bank
B) Inclined down stream
C) Inclined up stream
D) None of these
Correct Option: B

Question: The optimum depth of kor watering for a rice crop, is

A) 23.0 cm
B) 19.0 cm
C) 17.5 cm
D) 13.5 cm
Correct Option: B

Question: Which one of the following statements is correct?

A) The canal system and the drainage system are complementary
B) The canal system runs on ridges, gets divided into smaller channels and spreads its water on the land
C) The drainage system runs along the lowest line, collects drainage water from the slopes and joins the main stream
D) All the above
Correct Option: D

Question: For cereal crops the most commonly adopted method of irrigation, is

A) Free flowing method
B) Check method
C) Furrow method
D) Sprinkling method
Correct Option: B

Question: If D is the depth of water upstream of the throat above its sill, B is the width of the throat, to achieve critical flow in an open venturi flume, the theoretical maximum flow Q, is

A) Q = 1.71 BD1/2
B) Q = 1.71 BD
C) Q = 1.71 BD3/2
D) Q = 1/71 BD2/3
Correct Option: C

Question: The intensity of irrigation means

A) Percentage of culturable commanded area to be irrigated annually
B) Percentage of gross commanded area to be irrigated annually
C) Percentage of the mean of culturable commanded area and the gross commanded area to be irrigated annually
D) Total depth of water supplied by the number of waterings
Correct Option: A

Question: Retrogression of the bed level of a river downstream a weir, occurs due to

A) Heavy impact of water
B) Increase of the bed level
C) Less percentage of silt
D) Soft soil strata
Correct Option: C

Question: Meandering of a river generally occurs, in

A) Rocky stage
B) Delta stage
C) Boulder stage
D) Trough stage
Correct Option: D

Question: For designing the venturi head,

A) Width of the throat should not be less than one-third of the bed width of main canal
B) Length of the throat should be 2.5 times the depth measured to F.S.L. in the main canal
C) Minimum throat width should not be less than 60 cm
D) All the above
Correct Option: D

Question: Disposal of extra excavated earth of canals, is utilised to provide a spoil bank on

A) Left side
B) Right side
C) Both sides
D) All the above
Correct Option: D

Question: In a concrete canal the approximate permissible velocity of water should not

A) 0.5 m/sec
B) 1 m/sec
C) 1.5 m/sec
D) 2 m/sec
Correct Option: D

Question: Lacy's regime condition is obtained if

A) Silt grade in the channel is variable
B) Discharge in the channel is variable
C) Silt charge in the channel is variable
D) Channel flows in unlimited, incoherent alluvium of the same character as that transported material
Correct Option: B

Question: A hydraulic jump is generally formed when a stream moving with

A) A hyper-critical velocity meets a stream moving with a critical velocity
B) A hyper-critical velocity meets a stream moving with a hyper-critical velocity
C) A hyper-critical velocity meets a stream moving with a sub-critical velocity
D) A sub-critical velocity meets a stream moving with a hyper-critical velocity Answer: Option
Correct Option: C

Question: Pick up the incorrect statement from the following. Culturable commanded area is the gross area of an irrigation canal system less

A) Populated area
B) Alkaline area
C) Forest area
D) Fallow land
Correct Option: D

Question: The downstream expansion head of a guide bank is extended to subtend an angle at the centre, equal to

A) 30°
B) 45°
C) 60°
D) 90°
Correct Option: B

Question: A fall which maintains its depth, is

A) A trapezoidal notch fall
B) A low weir fall
C) A rectangular notch fall
D) All the above
Correct Option: D

Question: A current meter measures the velocity of flow, if it is held

A) On the surface of water
B) At the bottom of channel
C) At any point within the cross-section
D) None of these
Correct Option: C

Question: The width of a meander belt is the transverse distance between

A) Apex point of one curve and apex point of the reserve curve
B) Apex point and the crossing
C) Two banks of meandering river
D) None of these
Correct Option: A

Question: When a canal is carried over a natural drainage, the structure provided, is known as

A) Syphon
B) Aqueduct
C) Super passage
D) Syphon-aqueduct
Correct Option: B

Question: For smooth entry of water in a canal, the angle between head regulator and water is generally kept

A) 80°
B) 90°
C) 110°
D) 120°
Correct Option: C

Question: In rigid module, the discharge

A) Is independent of water levels in the distributary and water course
B) Depends upon the water level in distributary
C) Depends upon the water level in the water course
D) Depends upon the water levels of both, /.e. distributary and water course
Correct Option: A

Question: For standing crops in undulating sandy fields, the best method of irrigation, is

A) Sprinkler irrigation
B) Free flooding
C) Check method
D) Furrow method
Correct Option: A

Question: The saturation line is the line up to which banks get saturated after the canal runs for some time. The saturation gradient in ordinary loam soil, is generally

A) 0.0840277777777778
B) 0.125694444444444
C) 0.167361111111111
D) 0.209027777777778
Correct Option: C

Question: Fundamental momentum equation for a hydraulic jump, is

A) D12 - D22 = (2q/g) x (V1-V2)
B) D22 - D12 = (2q/g) x (V- V2)
C) D12 - D22 = (2q/g) x (V2-V1)
D) D12 + D22 = (2q/g) x (V2-V1)
Correct Option: B

Question: The uplift pressure on the roof of an inverted syphon, is maximum when

A) Drain in running dry
B) Canal is running dry
C) Canal is running with F.S.L.
D) Drain is running with H.F.L.
Correct Option: D

Question: The ratio of the discharge over a trapezoidal crest to a rectangular crest of Sarda falls of identical parameters, is

A) 1.084
B) 1.074
C) 1.064
D) 1.054
Correct Option: A

Question: If A is the depth of water in metres, B is the number of days of base period and D is the duty in hectare/cumec, the relationship which holds good, is

A) D = Δ (8.64D/B)
B) B = Δ (8.64 B/D)
C) D = (8.6 Δ/B)
D) Δ= (8.6 B/D)
Correct Option: D

Question: The top soil of a water logged field becomes more alkaline and infertile if its pH value is

A) 5
B) 7
C) 9
D) 11
Correct Option: D

Question: If average particle size of the silt in millimetres is m, the Lacey's silt factor f is proportional to

A) m3
B) m 1⁄2
C) m 1⁄3
D) m 2⁄3
Correct Option: B

Question: The sensitivity of a rigid module, is

A) 2
B) 1.5
C) 1
D) Zero
Correct Option: D