# 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**

*p*_{1}and*p*_{2}are mutually perpendicular principal stresses acting on a soil mass, the normal stress on any plane inclined at angle Î¸° to the principal plane carrying the principal stress*p*_{1}, is:- (A) [(p₁ -
p₂)/2] + [(p₁ + p₂)/2] sin 2Î¸

- (B) [(p₁ -
p₂)/2] + [(p₁ + p₂)/2] cos 2Î¸

- (C) [(p₁ +
p₂)/2] + [(p₁ - p₂)/2] cos 2Î¸

- (D) [(p₁ +
p₂)/2] + [(p₁ - p₂)/2] sin 2Î¸

**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*/6

*Z*)

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