civil engineering MCQs – Page 42

Practise multiple-choice questions from civil engineering for competitive examinations and subject revision. Review each marked answer and report any item that may be outdated or unclear.

civil engineering Mcqs
821. The live load to be considered for an accessible roof, is________________?
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A. 200 kg/cm 2

B. 75 kg/m3

C. Nil

D. 150 kg/m 2
822. The design of a retaining wall assumes that the retained earth________________?
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A. Is dry

823. The transverse reinforcements provided at right angles to the main reinforcement_______________?
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A. All the above

B. Distribute the load

C. Resist the shrinkage stress

D. Resist the temperature stresses

824. Side face reinforcement shall be provided in the beam when depth of the web in a beam exceeds_____________?
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A. 120 cm

B. 50 cm

C. 100 cm

D. 75 cm
825. The center of percussion of the homogeneous rod of length L suspended at the top will be__________________?
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A. 3L/4

B. 2L/3

C. L/3

D. L/2

E. 3L/8

826. A force is completely defined when we specify________________?
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A. direction

B. none of the above

C. all of the above

D. magnitude

E. point of application

827. intensity of pressure at a depth h on a block of earth weighing w per unit If p1 is the vertical______________?
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A. wh (1 sin )/(1 + ) )

B. wh (1 tan )/(1 +

C. w (1 cos )/h (1 + sin )

D. wh (1 cos )/(1 + ) p2 is

828. The anchorage value of a hook is assumed sixteen times the diameter of the bar if the angle of the bend, is___________________?
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A. All the above

B. 45

C. 30

D. 40

829. An intermediate T-beam reinforced with two layers of tensile steel with clear cover 13 cm encasted with the floor of a hall 12 metres by 7 metres, is spaced at 3 metres from adjoining beams and if the width of the beam is 20 cm, the breadth of the flange is__________________?
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A. 176 cm

B. 233 cm

C. 300 cm

D. 236 cm

830. Pick up the assumption for the design of a pre-stressed concrete member from the following_______________?
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A. A transverse plane section remains a plane after bending

B. All the above

C. During deformation limits, Hooks law is equally applicable to concrete as well as to steel

D. Variation of stress in reinforcement due to changes in external loading is negligible

831. Dynamic friction as compared to static friction is________________?
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A. more

B. same

C. less

D. may be less of more depending on nature of surfaces and velocity

E. has no correlation

832. The M.I. of hollow circular section about a central axis perpendicular to section as compared to its M.I. about horizontal axis is_________________?
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A. four times

B. same

C. half

D. one fourth

E. double
833. Minimum spacing between horizontal parallel reinforcement of different sizes, should not be less than________________?
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A. Twice the diameter of thinner bar

B. One diameter of thicker bar

C. None of these

D. One diameter of thinner bar

834. If the diameter of the main reinforcement in a slab is 16 mm, the concrete cover to main bars is_____________?
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A. 14 mm

B. 12 mm

C. 16 mm

D. 10 mm

835. In a pre-stressed beam carrying an external load W with a bent tendon is having angle of -stressed load P. The net downward load at the centre is_________________?
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A. W 2P

B. W P

C. W P

D. W 2P
836. If is the sectional area of a pre-stressed rectangular beam provided with a tendon pre -stressed by a force through its centroidal longitudinal axis, the compressive stress in concrete, is_______________?
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A. A/P

B. 2A/P

C. P/A

D. P/2A

837. If a number of forces act simultaneously on a particle, it is possible_________________?
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A. to replace them by a single force through C.G.

B. to replace them by a single force

C. to replace them by a couple and a force

D. not a replace them by a single force

E. to replace them by a couple

838. The C.G. of a right circular solid cone of height h lies at the following distance from the base_____________?
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A. h/2

B. h/4

C. h/6

D. 3/i/5

E. J/3

839. If depth of slab is 10 cm, width of web 30 cm, depth of web 50 cm, centre to centre distance of beams 3 m, effective span of beams 6 m, the effective flange width of the beam, is________________?
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A. 100 cm

B. 150 cm

C. 300 cm

D. 200 cm

840. In the zone of R.C.C. beam where shear stress is less than 5 kg/cm2, nominal reinforcement is provided at a pitch of________________?
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A. One-third lever arm of the section

B. One and half lever arm of the section

C. Lever arm of the section

D. One -half lever arm of the section