civil engineering MCQs – Page 76

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 Review each marked answer and report any item that may be outdated or unclear.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
1501. The height of the center of arm of a semaphore signal above the ground is_________________?
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A. 8.5m

B. 7.5 m

C. 5.5m

D. 6.5 m

1502. Dimensions of coefficient of transmissibility are______________?
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A. MLT

B. M L2 T1

C. rvfLT1

D. MLV

1503. The height of the rail for 52 kg rail section is_______________?
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A. 156 mm

B. 143 mm

C. 129mm

D. 172 mm

1504. The ratio of rate of change of the discharge of an outlet to the rate of change of the discharge of distributing channel is called________________?
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A. proportionality

B. sensitivity

C. flexibility

D. setting

1505. Loose jaws of steel trough sleepers are made of___________________?
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A. mild steel

B. cast steel

C. cast iron

D. spring steel
1506. In which of the following trusses, the method of substitution is required for determining the forces in all the members of the truss by graphic statics ?
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A. fink truss

B. king post truss

C. warren truss

D. howe truss

1507. Normally the limiting value of cant is________________?
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A. G/12

B. G/8

C. G/10

D. G/15

1508. In SI units, the units of force and energy are respectively___________________?
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A. Newton and joule

B. kg-wt and joule

C. Dyne and erg

D. Newton and watt

1509. The total gap on both sides between the inside edges of wheel flanges and gauge faces of the rail is kept as_________________?
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A. 10mm

B. 19 mm

C. 16mm

D. 13mm

1510. A system of copianar forces acting on a rigid body can be reduced to________________?
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A. none of the above

B. one force and one couple only

C. one couple only

D. one force only

1511. The net head under which the turbine reaches its peak efficiency at synchronous speed is called________________?
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A. gross head

B. operating head

C. rated head

D. design head
1512. Wear of rails is maximum in weight of___________________?
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A. coastal area

B. tangent track

C. sharp curve

D. tunnels

1513. The shape of a suspended cable for a uniformly distributed load over it is__________________?
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A. catenary

B. circular

C. cubic parabola

D. parabolic
1514. The total capacity of a reservoir is 25 million cubic metres and dead storage is 5 million cubic metres. If the average volume of sediment deposition is 0.10 million cubic metre per year, then the usefulness of the reservoir will start reducing after_________________?
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A. 250 years

B. 50 years

C. 150 years

D. 200 years

1515. Wetted perimeter of a regime channel for a discharge of 64 cumecs as per Laceys theory will be_________?
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A. 38m

B. 19 m

C. 76m

D. 57m

1516. The maximum displacement of a particle executing S.H.M. corresponds to__________________?
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A. zero potential energy and maximum kinetic energy

B. zero kinetic energy and maximum potential energy

C. maximum kinetic energy and maxi-mum potential energy

D. minimum kinetic energy and minimum potential energy

1517. Infiltration capacity_________________?
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A. is a constant factor

B. changes with time

C. changes with location

D. changes with both time and location
1518. Largest dimension of a rail is its________________?
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A. any of the above

B. height

C. head width

D. foot width

1519. The water utilizable by plants is available in soils mainly in the form of________________?
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A. gravity water

B. chemical water

C. capillary water

D. hydroscopic water

1520. According to Khoslas theory, the exit gradient in the absence of a downstream cutoff is_____________?
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A. infinity

B. very large

C. 0

D. unity