civil engineering MCQs – Page 74

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 Review each marked answer and report any item that may be outdated or unclear.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
1461. If D is the depth of scour below original bed, then the width of launching apron is generally taken as________________?
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A. 1.5 D

B. 2.0 D

C. 2.5 D

D. 1.2 D

1462. In case of non-availability of space due to topography, the most suitable spillway is________________?
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A. shaft spillway

B. chute spillway

C. straight drop spillway

D. ogee spillway

1463. Gauge is the distance between_______________?
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A. running faces of rails

B. outer faces of rails

C. center to center of rails

D. none of the above

1464. The amount of irrigation water required to meet the evapotranspiration needs of the crop during its full growth is called________________?
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A. effective rainfall

B. consumptive irrigation requirement

C. net irrigation requirement

D. consumptive use

1465. A hydroelectric scheme operating under a head of 80 m will be classified as_____________?
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A. low head scheme

B. high head scheme

C. medium head scheme

D. none of the above

1466. The limiting value of cant deficiency for Meter Gauge routes is__________________?
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A. 75 mm

B. 40 mm

C. 50 mm

D. 100 mm

1467. The maximum rainfall depth of 300 mm in 24 hours has a return period of 100 years. The probability of 24 hours rainfall equal to or greater than 300 mm occurring at least once in 10 years is given by_____________?
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A. (0.9)00

B. (0.99)10

C. 1 (0.99)10

D. l-(0.9)100

1468. A Broad Gauge branch line takes off as a contrary flexure from a main line If the superelevation required for branch line is 10 mm and cant deficiency is 75 mm, the superelevation to be actually provided on the branch line will be__________________?
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A. 65 mm

B. 85 mm

C. 10 mm

D. 64 mm

1469. Number offish bolts per fish plate is________________?
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A. 2

B. 4

C. 5

D. 6

1470. Interception losses are due to_______________?
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A. stream flow

B. evaporation

C. transpiration

D. correct answer is?

1471. A straight glacis type fall with a baffle platform and a baffle wall is called_____________?
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A. glacis fall

B. inglis fall

C. Montague type fall

D. vertical dropfall

1472. If the direction of projection bisects the angle between the vertical and the inclined plane, then the range of projectile on the inclined plane is__________________?
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A. zero

B. unpredictable

C. minimum

D. maximum
1473. Silt excluders are constructed on the________________?
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A. river bed upstream of head regulator

B. river bed downstream of head regulator

C. canal bed upstream of head regulator

D. canal bed downstream of head regulator

1474. If the critical shear stress of a channel is xc, then the average value of shear stress required to move the grain on the bank is___________________?
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A. 1.33 TC

B. xc

C. 0.75 TC

D. 0.5 xc

1475. The relation between probability (P) and recurrence interval (T) is given by_________________?
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A. P/T = 1

B. PT = 1

C. P/T2 = 1

D. PT2 = 1

1476. The torque produced by a force depends on__________________?
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A. correct answer is?

B. the direction of the force

C. the magnitude of the force

D. thepoint of application of the force relative to origin</strong>

1477. Assertion A : To estimate the rainfall over a catchment, the number of raingauges required per unit area is large for hilly areas. Reason R : Rainfall gradient is steep. Select your correct answer according to the coding system given below ?
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A. Both A and R are true and R is the correct explanation of A

B. Both A and R are true but R is not the correct explanation of A

C. A is true but R is false

D. A is false but R is true

1478. A quantity whose dimensions are M2L2 T3 could be the product of_________________?
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A. mass and power

B. energy and velocity

C. force and velocity

D. force and pressure

1479. The most suitable chemical which can be applied to the water surface for reducing evaporation is________________?
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A. methyl alcohol

B. butyl alcohol

C. cetyl alcohol

D. ethyl alcohol

1480. In a Sarda type fall, rectangular crest is used for discharge upto______________?
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A. 14 cumecs

B. 10 cumecs

C. 20 cumecs

D. 6 cumecs