civil engineering MCQs – Page 23

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 Review each marked answer and report any item that may be outdated or unclear.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

441. The slab is designed as one way if the ratio of long span to short span is_____________?
0

A. between 1 and 1.5

B. greater than 2

C. less than 1

D. between 1.5 and 2

442. Toughness index is defined as the ratio of____________________?
0

A. consistency index to liquidity index

B. plasticity index to flow index

C. liquidity index to flow index

D. plasticity index to consistency index

443. Within the consolidation process of a saturated clay__________________?
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A. a gradual increase in neutral pressure and a gradual decrease in effective pressure takes place and sum of the two is constant

B. a gradual decrease in neutral pressure and a gradual increase in effective pressure takes place and sum of the two is constant

C. both neutral pressure and effective pressure decrease

D. both neutral pressure and effective pressure increase

444. Ultimate strength of cold drawn high steel wires_______________?
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A. decreases with increase in diameter of bar

B. none of the above

C. does not depend on diameter of bar

D. increases with increase in diameter of bar

445. Terzaghis general bearing capacity formula for a strip footing (C Nc + y D Nq + 0.5 Y NTB. gives______________?
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A. safe bearing capacity

B. ultimate bearing capacity

C. net safe bearing capacity

D. net ultimate bearing capacity where C = unit cohesion

446. Rise of water table in cohesionless soils upto ground surface reduces the net ultimate bearing capacity approximately by________________?
0

A. 25%

B. 75%

C. 50%

D. 90%

447. A pre-cast pile generally used, is______________?
0

A. Octagonal

B. Circular

C. Square

D. Square with corners chamfered

448. The average permissible stress in bond for plain bars in tension is_______________?
0

A. decreased by 10% for bars in compression

B. increased by 10% for bars in compression

C. increased by 25% for bars in compression

D. decreased by 25% for bars in compression

449. Constant head permeameter is used to test permeability of_______________?
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A. clay

B. silt

C. fine sand

D. coarse sand

450. Coarse grained soils are best compacted by a_______________?
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A. vibratory roller

B. drum roller

C. rubber tyred roller

D. sheeps foot roller

451. In the triaxial compression test, the application of additional axial stress (i.e. deviator stress) on the soil specimen produces shear stress on__________________?
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A. horizontal plane only

B. vertical plane only

C. both horizontal and vertical planes

D. all planes except horizontal and vertical planes

452. The clay mineral with the largest swelling and shrinkage characteristics is_______________?
0

A. montmorillonite

B. none of the above

C. illite

D. kaolinite

453. If is the net upward pressure on a square footing of side for a square column of side , the maximum bending moment is given by_________________?
0

A. B.M = pb (c a)/4

B. B.M = pb (b a)/4

C. B.M = pb (b + a)/8

D. B.M = pb (b a)/8

454. Select the incorrect statement?
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A. Bearing capacity of a soil depends upon shape and size of footing

B. Bearing capacity of a soil depends upon the amount and direction of load

C. Bearing capacity of a soil depends on the type of soil

D. Bearing capacity of a soil is indepen-dent of rate of loading

455. In a consolidated drained test on a normally consolidated clay, the volume of the soil sample during shear________________?
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A. decreases

B. increases

C. first increases and then decreases

D. remains unchanged

456. Allowable bearing pressure for a foundation depends upon_______________?
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A. allowable settlement only

B. ultimate bearing capacity of soil only

C. both allowable settlement and ultimate bearing capacity

D. none of above

457. A very comfortable type of stairs is_______________?
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A. Straight

B. Dog legged

C. Open newel

D. Geometrical

458. Prestress loss due to friction occurs________________?
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A. only in post-tensioned beams

B. only in pretensioned beams

C. in both post-tensioned and preten-sioned beams

D. none of the above

459. Stokes law is valid only if the size of particle is________________?
0

A. all of the above

B. less than 0.0002 mm

C. between 0.2 mm and 0.0002 mm

D. greater than 0.2 mm

460. Select the incorrect statement ?
0

A. increases as the size of particles increases

B. increases as the soil gradation im-proves

C. is limited to a maximum value of 45

D. ective angle of shearing resistance

E. is rarely more than 30 for fine grained soil

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