civil engineering MCQs – Page 73

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 Review each marked answer and report any item that may be outdated or unclear.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
1441. The dimensions of centrifugal force are__________________?
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A. MLT1

B. M1 L2 T2

C. MLT2

D. ML-T2

1442. A ladder of weight w rests against a smooth vertical wall, and rests on rough horizontal ground, the coefficient of friction between the ladder and the ground being 1/4. The maximum angle of inclination of the ladder to the vertical, if a man of weight w is to walk to the top of it safely, is tan1 x, where x is___________________?
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A. 4

B. 4-Jan

C. 3

D. 1/3
1443. Hydrodynamic pressure due to earthquake acts at a height of_________________?
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A. 4H737t below the water surface where H is the depth of water

B. 4H/371 above the base

C. 3H747t below the water surface

D. 3H/47I above the base

1444. Which of the following devices is used to transfer the wagons or locomotives to and from parallel tracks without any necessity of shunting ?
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A. turntable

B. triangle

C. scotch block

D. traverser
1445. The side slope of embankments for a railway track is generally taken as______________?
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A. 1:02

B. 1:01

C. 2:1

D. 1.5:1

1446. When the upstream face of a gravity dam is vertical, then the intensity of water pressure at the water surface and at the base respectively will be_______________?
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A. wH2/2and wH2/3

B. 0 and wH212

C. wH and 0

D. OandwII
1447. The maximum permissible eccentricity for no tension at the base of a gravity dam is__________________?
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A. B/3

B. B/6

C. B/4

D. B/2

1448. In a lifting machine with efficiency 60%, an effort of 200 N is required to raise a load of 6 kN. The velocity ratio of the machine is_____________________?
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A. 30

B. 50

C. 60

D. 80

1449. When the reservoir is full, the maximum compressive force in a gravity dam is produced______________?
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A. at the toe

B. at centre of base

C. at the heel

D. within the middle third of base

1450. If there are two canals taking off from each flank of a river, then there will be____________________?
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A. two divide walls and two undersluices

B. one divide wall and one undersluice

C. one divide wall and two undersluices

D. two divide walls and one undersluice

1451. Main purpose of mean water training for rivers is________________?
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A. to preserve the channel in good shape by efficient disposal of suspended and bed load

B. flood control

C. all of the above

D. to provide sufficient depth of water in navigable channels, during low water periods

1452. The main function of a divide wall is to_______________?
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A. control the silt entry in the canal

B. prevent river floods from entering the canal

C. provide smooth flow at sufficiently low velocity

D. separate the undersluices from weir proper
1453. When surface of transpiration is submerged under water, then potential evapotranspiration is________________?
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A. equal to evapotranspiration

B. much less than evapotranspiration

C. much more than evapotranspiration

D. equal to or less than evapotranspi-ration

1454. The angle of projection at which the horizontal range and maximum height of a projectile are equal to___________________?
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A. 45

B. tan-1 (2)

C. tan- (4)

D. tan1 (1/4)

1455. Which one of the following rail failures is caused by loose fish bolts at expansion joints ?
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A. crushed head

B. transverse fissures

C. angular break

D. split head

1456. The resultant of two forces P and Q is R. If Q is doubled, the new resultant is perpendicular to P. Then_________________?
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A. Q = R

B. P = R

C. P = Q

D. None of the above is correct

1457. Optimum depth of kor watering for rice is______________?
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A. 135 mm

B. 215 mm

C. 165 mm

D. 190 mm
1458. In a chute spillway, the flow is usually____________________?
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A. uniform

B. critical

C. super critical

D. subcritical

1459. For wave action in dams, the maximum height of freeboard is generally taken to be equal to_______________?
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A. 1.25 hw

B. 1.50 hw

C. 0.5 hw

D. 0.75 hw

1460. A train is hauled by 2-8-2 locomotive with 22.5 tonnes and on each driving axle. Assuming the coefficient of rail-wheel friction to be 0.25, what would be the hauling capacity of the locomotive?
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A. 15.0 tonnes

B. 45.0 tonnes

C. 90.0 tonnes

D. 22.5 tonnes