Practice Test: Question Set - 02
1. 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
2. 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
3. If the ratio of the span to the overall depth does not exceed 10, the stiffness of the beam will ordinarily be satisfactory in case of a
- (A) Simply
supported beam
- (B) Continuous
beam
- (C) Cantilever
beam
- (D) None
of these
4. A pile of length ‘L’ carrying a uniformly distributed load ‘W’ per metre length is suspended at two points, the maximum, B.M. at the centre of the pile or at the points of suspension, is
- (A) WL/8
- (B) WL²/24
- (C) WL²/47
- (D) WL²/16
5. If ‘p’ is the net upward pressure on a square footing of side ‘b’ for a square column of side ‘a’, the maximum bending moment is given by
- (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
6. According to load factor method, the permissible load ‘W’ on a short column 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
7. 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
8. If p1 and p2 are mutually perpendicular principal stresses acting on a soil mass, the normal stress on any plane inclined at angle θ° to the principal plane carrying the principal stress p1, is:
- (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
9. The maximum permissible size of aggregates to be used in casting the ribs of a slab, is
- (A) 5 mm
- (B) 7.5 mm
- (C) 10 mm
- (D) 15 mm
10. Pick up the incorrect statement from the following: Tensile reinforcement bars of a rectangular beam
- (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
11. Steel bars are generally connected together to get greater length than the standard length by providing
- (A) Straight bar
splice
- (B) Hooked
splice
- (C) Dowel splice
- (D) All the
above
12. The minimum thickness of the cover at the end of a reinforcing bar should not be less than twice the diameter of the bar subject to a minimum of
- (A) 10 mm
- (B) 15
mm
- (C) 20 mm
- (D) 25 mm
13. Top bars are extended to the projecting parts of the combined footing of two columns L distance apart for a distance of
- (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
14. For M 150 grade concrete (1 : 2 : 4) the moment of resistance factor is
- (A) 0.87
- (B) 8.50
- (C) 7.50
- (D) 5.80
15. ‘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 subjected to a maximum bending moment ‘M’ is
- (A) f = (P/A)
- (Z/M)
- (B) f = (A/P)
- (M/Z)
- (C) f = (P/A)
- (M/Z)
- (D) f =
(P/A) -
(M/6Z)
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