civil engineering MCQs – Page 213

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 Review each marked answer and report any item that may be outdated or unclear.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
4241. Hydrodynamic pressure due to earthquake acts at a height of_________________?
comments icon0

A. 4H737t below the water surface where H is the depth of water

B. 3H/47I above the base

C. 4H/371 above the base

D. 3H747t below the water surface

4242. Trap efficiency of a reservoir is a function of_______________?
comments icon0

A. none of the above

B. capacity/inflow ratio

C. outflow/inflow ratio

D. capacity/outflow ratio

4243. Which of the following types of rain gauges is used for measuring rain in remote hilly inaccessible areas ?
comments icon0

A. floating type

B. weighing type

C. Simons raingauge

D. tipping bucket type
4244. A straight glacis type fall with a baffle platform and a baffle wall is called_____________?
comments icon0

A. vertical dropfall

B. Montague type fall

C. glacis fall

D. inglis fall
4245. A runoff river plant_________________?
comments icon0

A. has no pondage at all

B. is suitable only on a perennial river

C. generates power during peak hours only

D. is a medium head scheme

4246. Which of the following spillways is least suitable for an earthen dam ?
comments icon0
A. ogee spillway

B. chute spillway

C. side channel spillway

D. shaft spillway

4247. A 70% index of wetness means_______________?
comments icon0
A. rain deficiency of 30%

B. rain deficiency of 70%

C. rain excess of 30%

D. none of the above

4248. Irrigation water having the concentration of Na++ , Ca++ and Mg++ as 20, 3 and 1 Milli equivalent per litre respectively will be classified as__________________?
comments icon0
A. medium sodium water

B. very high sodium water

C. high sodium water

D. low sodium water

4249. The stage of river carrying a discharge of Q m7sec at a point is 10 m and slope of water surface is (1/4000). The discharge of a flood at the same point and same stage of 10 m with a water surface slope of(l/1000) will be________________?
comments icon0

A. 4 Q m3/sec

B. 0.5 Q mVsec

C. V2 Q m3/sec

D. 2 Q m3/sec
4250. The main function of a divide wall is to_______________?
comments icon0

A. prevent river floods from entering the canal

B. control the silt entry in the canal

C. provide smooth flow at sufficiently low velocity

D. separate the undersluices from weir proper
4251. The ratio of the average load to the installed capacity of the plant whose reserve capacity is zero will be equal to__________________?
comments icon0

A. load factor

B. plant factor

C. utilisation factor

D. both (A) and (B)

4252. The ratio of average values of shear stresses produced on the bed and the banks of a channel due to flowing water is________________?
comments icon0

A. equal to 1

B. equal to zero

C. less than 1

D. greater than 1
4253. An artesian aquifer is the one where______________?
comments icon0

A. none of the above

B. water is under pressure between two impervious strata

C. water table serves as upper surface of zone of saturation

D. water surface under the ground is at atmospheric pressure

4254. If the intensity of rainfall is more than the infiltration capacity of soil, then the infiltration rate will be______________?
comments icon0
A. equal to infiltration capacity

B. more than infiltration capacity

C. equal to rate of rainfall

D. more than rate of rainfall

4255. An aggrading river is a_________________?
comments icon0
A. silting river

B. scouring river

C. both silting and scouring river

D. neither silting nor scouring river

4256. A 6 hours storm had 4 cm of rainfall and the resulting runoff was 2 cm. If <j) index remains at the same value, the runoff due to 10 cm of rainfall in 12 hours in the catchment is___________________?
comments icon0

A. 7.5 cm

B. 6.0 cm

C. 9.0 cm

D. 4.5 cm

4257. The uplift pressure on the face of a drainage gallery in a dam is taken as_________________?
comments icon0

A. average of hydrostatic pressure at toe and heel

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

C. none of the above

D. hydrostatic pressure at toe

4258. A repelling groyne is aligned________________?
comments icon0

A. pointing downstream

B. parallel to bank

C. perpendicular to bank

D. pointing upstream
4259. 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 ?
comments icon0
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

4260. The most suitable material for the central impervious core of a zoned embankment type dam is_______________?
comments icon0
A. clay mixed with fine sand

B. coarse sand

C. clay

D. silty clay