civil engineering MCQs – Page 80

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 Review each marked answer and report any item that may be outdated or unclear.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
1581. The uplift pressure on the face of a drainage gallery in a dam is taken as_________________?
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A. none of the above

B. hydrostatic pressure at toe

C. two-third of hydrostatic pressure at toe plus one-third of hydrostatic pressure at heel

D. average of hydrostatic pressure at toe and heel

1582. A 70% index of wetness means_______________?
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A. none of the above

B. rain deficiency of 70%

C. rain deficiency of 30%

D. rain excess of 30%

1583. The ratio of average values of shear stresses produced on the bed and the banks of a channel due to flowing water is________________?
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A. equal to 1

B. greater than 1

C. equal to zero

D. less than 1

1584. The time period of a simple pendulum depends on__________________?
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A. mass of suspended particle

B. correct answer is

C. length of the pendulum

D. acceleration due to gravity </strong>

1585. If y is force and x is velocity, then dimensions of =r are dx2__________________?
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A. M^T

B. M2LT3

C. ML-T1

D. ML-T0
1586. The diagram showing the point of application and line of action of forces in their plane is called____________________?
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A. funicular diagram

B. space diagram

C. force diagram

D. vector diagram

1587. For the upstream face of an earthen dam, the most adverse condition for stability of slope is_______________?
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A. sudden drawdown

B. during construction

C. sloughing of slope

D. steady seepage

1588. The stream which does not have any base flow contribution is called________________?
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A. ephemeral stream

B. intermittent stream

C. none of the above

D. perennial stream

1589. A treadle bar is used for_____________________?
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A. setting marshalling yard signals

B. interlocking points and signal

C. track maintenance

D. setting points and crossings

1590. The ratio of the average load to the installed capacity of the plant whose reserve capacity is zero will be equal to__________________?
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A. load factor

B. plant factor

C. utilisation factor

D. both (A) and (B)

1591. The area between the isohyets 45 cm and 55 cm is 100 square km and between 55 cm and 65 cm is 150 square km. The average depth of annua! precipitation over the above basin of 250 square km will be__________________?
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A. 56 cm

B. 60 cm

C. 50 cm

D. 55 cm

1592. A repelling groyne is aligned________________?
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A. pointing upstream

B. perpendicular to bank

C. pointing downstream

D. parallel to bank

1593. For a proportional outlet, the flexibility is______________?
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A. between zero and 1

B. 1

C. greater than 1

D. zero

1594. Variability of rainfall is____________?
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A. largest in regions of high rainfall

B. correct answer is?

C. largest in regions of scanty rainfall</strong>

D. largest in coastal areas

1595. The unit hydrograph of a specified duration can be used to evaluate the hydrograph of storms of_________________?
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A. same duration only

B. same and shorter duration

C. same and longer duration

D. any duration
1596. A uniform pyramid and a uniform prism of same height lie with their base on the surface. Which is more stable ?
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A. pyramid

B. prism

C. both equally stable

D. none of the above

1597. Rate of evaporation from a water surface increases if_________________?
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A. velocity of wind is decreased

B. concentration of soluble solids in water is decreased</strong>

C. difference of vapour pressure between water and air is increased

D. correct answer is?

1598. For supplying water to rabi crop, kharif crop and sugarcane, the channel is designed for a capacity equal to the greater of the water requirement of_______________?
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A. rabi and sugarcane or kharif and sugarcane

B. rabi or kharif or sugarcane

C. rabi or kharif

D. rabi and kharif or sugarcane

1599. For the purpose of track maintenance, the number of turn out equivalent to one track km are__________________?
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A. 2

B. 10

C. 5

D. 1

1600. The outlet discharge factor is the duty at the head of_________________?
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A. main canal

B. distributory

C. branch canal

D. watercourse