civil engineering MCQs – Page 38

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 Review each marked answer and report any item that may be outdated or unclear.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
741. The maximum ratio of span to depth of a cantilever slab, is_______________?
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A. 8

B. 12

C. 16

D. 10

742. The units of moment of inertia of mass are_____________________?
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A. m2/kg

B. kg/m2

C. kg m2

D. kg/m

E. m4

743. If W is the load on a circular slab of radius R, the maximum circumferential moment at the centre of the slab, is________________?
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A. WR/16

B. 2WR/16

C. 3WR/16

D. Zero

744. If three forces acting in different planes can be represented by a triangle, these will be in________________?
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A. partial equilibrium

B. non-equilibrium

C. unpredictable

D. full equilibrium

E. none of the above

745. The percentage of minimum reinforcement of the gross sectional area in slabs, is________________?
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A. 0.12%

B. 0.15 %

C. 0.10%

D. 0.18%

746. 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 from either end where, is________________?
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A. 50 cm

B. 200 cm

C. 100 cm

D. 150 cm
747. Thickened part of a flat slab over its supporting column, is technically known as_____________?
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A. Drop panel

B. Column head

C. Top of the column

D. None of these

748. 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 effective width of the slab be is_______________?
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A. Kx (1 + x/l) + bw

B. K/x (1 + x/d) + bw

C. Kx (1 x/l) + bw

D. All the above

749. In testing a pile by load test, pile platform is loaded with one and half times the design load and a maximum settlement is noted. The load is gradually removed and the consequent rebound is measured. For a safe pile, the net settlement (i.e. total settlement minus rebound) per tonne of test load should not exceed________________?
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A. 10 mm

B. 25 mm

C. 15 mm

D. 20 mm

750. 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__________________?
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A. 1/16th of the span

B. 1/10th of the span

C. 1/12th of the span

D. 1/8th of the span

751. An R.C.C. roof slab is designed as a two way slab if________________?
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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

752. If T and R are tread and rise respectively of a stair, then_______________?
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A. 2R + T = 30

B. R + 2 T = 60

C. 2R + T = 60

D. R + 2 T = 30

753. The minimum number of main steel bars provided in R.C.C________________?
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A. All the above

B. Rectangular columns is 4

C. Octagonal columns is 8

D. Circular columns is 6

754. The resolved part of the resultant of two forces inclined at an angle 9 in a given direction is equal to__________________?
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A. the difference of the forces multiplied by the cosine of 9

B. the sum of the forces multiplied by the sine of 9

C. the algebraic sum of the resolved parts of the forces in the given direction

D. the sum of the forces multiplied by the tangent of 9

E. the sum of the resolved parts of the forces in the given direction

755. Kinetic friction is the________________?
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A. tangent of angle between normal reac-tion and the resultant of normal reac-tion and the limiting friction

B. the friction force acting when the body is just about to move

C. dynamic friction

D. the friction force acting when the body is in motion

E. ratio of limiting friction and normal reaction

756. After pre-stressing process is completed, a loss of stress is due to______________?
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A. Creep of concrete

B. Shrinkage of concrete

C. All the above

D. Elastic shortening of concrete

757. For normal cases, stiffness of a simply supported beam is satisfied if the ratio of its span to its overall depth does not exceed________________?
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A. 10

B. 15

C. 25

D. 20
758. As the percentage of steel increases________________?
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A. Lever arm decreases

B. Depth of neutral axis increases

C. Lever arm increases

D. Depth of neutral axis decreases

759. A semi-circular disc rests on a horizontal surface with its top flat surface horizontal and circular portion touching down. The coefficient of friction between semi-cricular disc and horizontal surface is i. This disc is to be pulled by a horizontal force applied at one edge and it always remains horizontal. When the disc is about to start moving, its top horizontal force will____________________?
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A. unpredictable

B. slant up towards direction of pull

C. slant down towards direction of pull

D. none of the above

E. remain horizontal

760. Distribution of shear intensity over a rectangular section of a beam, follows_________________?
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A. A circular curve

B. A straight line

C. An elliptical curve

D. A parabolic curve