civil engineering MCQs – Page 286

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 Review each marked answer and report any item that may be outdated or unclear.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
5701. The vertical reaction for the arch is________________?
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A. wa/l

B. wa/2l

C. wl/a

D. wa/2l

5702. A three hinged arch is generally hinged at its supports and__________________?
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A. At one quarter span

B. None of these

C. At the crown

D. Anywhere in the rib
5703. A lift of weight W is lifted by a rope with an acceleration f. If the area of cross-section of the rope is A, the stress in the rope is_______________?
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A. [W (1 + f/ G)]/ A

B. [W (2 + g/f)]/A

C. [W (2 + f/G)]/A

D. (1 g/f)/A

5704. Pick up the correct statement from the following?
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A. In a loaded beam, the moment at which the entire section of the beam becomes fully plastic, is called plastic moment

B. In a fully plastic stage of the beam, the neutral axis divides the section in two sections of equal area

C. All the above

D. In a loaded beam, the moment at which the first yield occurs is called yield moment

5705. section modulus of a square section of side B and that of a circular section of The ratio of the diameter D, is___________________?
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A. /16

B. 8-Mar

C. 3 /16

D. 15-Feb

5706. For beams of uniform strength, if depth is constant______________?
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A. Width b M

B. Width b 3 M

C. Width b 1/M

D. Width b M

5707. In plastic analysis, the shape factor for a circular section, is_________________?
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A. 1.5

B. 1.7

C. 1.75

D. 1.6

5708. For beams breadth is constant__________________?
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A. Depth d M

B. Depth d 3

C. Depth d

D. Depth d 1/M

5709. The area of the core of a column of cross sectional area A, is_______________?
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A. (1/3) A

B. (1/12) A

C. (1/6) A

D. (1/18) A
5710. A concentrated load P is supported by the free end of a quadrantal ring AB whose end B is fixed. The ratio of the vertical to horizontal deflections of the end A, is______________?
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A. /6

B. /4

C. /2

D. /3

5711. A simply supported beam A carries a point load at its mid span. Another identical beam B carries the same load but uniformly distributed over the entire span. The ratio of the maximum deflections of the beams A and B, will be________________?
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A. 3-Feb

B. 8-May

C. 8/5

D. 2-Mar

5712. The force in EC of the truss shown in the given figure, is__________________?
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A. 4t tension

B. Zero

C. 5t compression

D. 5t tension

5713. In a shaft, the shear stress is not directly proportional to_________________?
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A. Angle of twist

B. Length of the shaft

C. Radius of the shaft

D. Modulus of rigidity

5714. The ratio of maximum shear stress to average shear stress of a circular beam, is________________?
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A. 4-Mar

B. 3-Feb

C. 4/3

D. 2-Mar

5715. The forces acting on the bar as shown in the given figure introduce________________?
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A. None of these

B. Compressive stress

C. Tensile stress

D. Shear stress
5716. A material may fail if______________?
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A. /2

B. Maximum strain exceeds /E

C. 0

D. Maximum shear stress exceeds

E. All the above
5717. A bar L metre long and having its area of cross-section A, is subjected to a gradually applied tensile load W. The strain energy stored in the bar is_________________?
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A. WL/2AE

B. WL/AE

C. WL/AE

D. WL/2AE
5718. A steel rod of sectional area 250 sq. mm connects two parallel walls 5 m apart. The nuts at the ends were tightened when the rod was heated to 100C. If steel = 0.000012/C, Esteel = 0.2 MN/mm2, the tensile force developed at a temperature of 50C, is_________________?
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A. 80 N/mm2

B. 150 N/mm2

C. 120 N/mm2

D. 100 N/mm 2

5719. The maximum harbour depth below lowest low water is generally equal to_________________?
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A. i) loaded draft + 1.2 m when bottom is soft

B. ) loaded draft + 1.8 m when bottom is soft

C. ) loaded draft + 1.8 m when bottom is rock</strong>

D. loaded draft + 1.2 m when bottom is rock
5720. Select the incorrect statement ?
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A. In low level method of mound construction, the area of working is limited.

B. In staging method of mound cons-truction, the work is not interrupted even during stormy weather

C. The progress of work in low level method of mound construction is very slow.

D. Barge method of mound construction is economical.