civil engineering MCQs – Page 217

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 Review each marked answer and report any item that may be outdated or unclear.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
4321. Presence of tail water in a gravity dam_____________?
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A. increases the shear stress

B. decreases the shear stress</strong>

C. increases the principal stress

D. correct answer is

E. decreases the principal stress

4322. The shape of recession limb of a hydrograph depends upon________________?
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A. basin characteristics only

B. storm characteristics only

C. both (A) and (B)

D. none of the above

4323. Variability of rainfall is____________?
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A. correct answer is?

B. largest in coastal areas

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

D. largest in regions of high rainfall
4324. Hydrograph is the graphical representation of________________?
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A. rainfall and time

B. surface runoff and time

C. runoff and time

D. ground waterflow and time

4325. A raingauge should preferably be fixed________________?
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A. in an open space

B. under the tree

C. in a closed space

D. near the building

4326. The aqueduct or superpassage type of works are generally used when_______________?
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A. none of the above

B. high flood drainage discharge is large and short lived

C. high flood drainage discharge is small

D. high flood drainage discharge is large and continues for a long time

4327. Lining of irrigation channels________________?
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A. increases the waterlogging area

B. decreases the waterlogging area

C. none of the above

D. does not change the water logging area

4328. Which of the following can be used as a meter fall ?
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A. unflumed glacis fall

B. all of the above

C. vertical drop fall

D. flumed glacis fall

4329. Interception losses are due to_______________?
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A. stream flow

B. evaporation

C. correct answer is?

D. transpiration

4330. Select the incorrect statement ?
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A. all of the above

B. Extensive irrigation should be adopted in areas susceptible to water logging

C. Intensive irrigation should be avoided in areas susceptible to water logging

D. Lift irrigation increases water logging
4331. The relation between probability (P) and recurrence interval (T) is given by_________________?
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A. P/T = 1

B. PT2 = 1

C. P/T2 = 1

D. PT = 1
4332. For a flood control reservoir, the effective storage is equal to_______________?
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A. useful storage valley storage

B. useful storage + surcharge storage -valley storage

C. useful storage + surcharge storage + valley storage

D. useful storage + surcharge storage

4333. The kor depth for rice is 190 mm and kor period is 14 days. The outlet factor for this will be_________________?
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A. 1172 hectares/m3/sec

B. 637 hectares/m3/sec

C. 972 hectares/m3/sec

D. 837 hectares/m3/sec

4334. A deep well_________________?
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A. is always deeper than a shallow well

B. has more discharge than a shallow well

C. is weaker structurally than a shallow well

D. both (A) and (B)

4335. When surface of transpiration is submerged under water, then potential evapotranspiration is________________?
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A. equal to evapotranspiration

B. much more than evapotranspiration

C. much less than evapotranspiration

D. equal to or less than evapotranspi-ration

4336. For a catchment area of 120 km2, the equilibrium discharge in m3/hour of an S-curve obtained by the summation of 6 hour unit hydro graph is_______________?
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A. 7.2 xlO6

B. 0.2 x 106

C. 2.4 xlO6

D. 0.6 x 106

4337. Average rate of water consumption perhead per day as per Indian Standard is______________?
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A. 200 litres

B. 135 litres

C. 100 litres

D. 165 litres

4338. A pipe conveying sewage from plumbing system of a single building to common sewer or point of immediate disposal is called________________?
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A. main sewer

B. house sewer

C. submain sewer

D. lateral sewer

4339. Cleaning is done by________________?
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A. back washing in slow sand filters

B. correct answer is

C. scraping and removal in filters rapid sand

D. back washing in rapid sand filters</strong>

E. scraping and removal in filters slow sand
4340. The rate of BOD exerted at any time is_____________?
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A. directly proportional to BOD satisfied

B. inversely proportional to BOD re-maining

C. directly proportional to BOD remain-ing

D. inversely proportional to BOD satisfied