civil engineering MCQs – Page 70

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 Review each marked answer and report any item that may be outdated or unclear.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
1381. A solid sphere of mass M and radius R rolls down a plane inclined at 0 with the horizontal. The acceleration of sphere is_______________?
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A. (3/7) g sin 0

B. (2/5) g sin 0

C. (1/3) g sin0

D. (5/7) g sin0
1382. The slope of sewer shall be__________________?
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A. given in the direction opposite to natural slope of ground

B. zero

C. steeper than 1 in 20

D. given in the direction of natural slope of ground
1383. The losses are more in_________________?
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A. turbulent flow

B. laminar flow

C. critical flow

D. transition flow

1384. The graphical method of determining the forces in the members of a truss is based on________________?
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A. method of joint

B. method of section

C. none of the two methods

D. either method

1385. The process of lagooning is primarily a means of________________?
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A. reducing the excessive flow in sewers

B. increasing flow of sewage through imhoff tanks

C. disposing of sludge

D. increasing the capacity of storage re-servoirs

1386. Coefficient of velocity for Bordas mouth piece running full is________________?
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A. 0.855

B. 0.707

C. 0.611

D. 1

1387. If a flywheel increases its speed from 10 rpm to 20 rpm in 10 seconds, then its angular acceleration is_____________________?
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A. rad/sec 10

B. rad/sec 30

C. none of the above

D. rad/sec 20

1388. The suitable system of sanitation for area of distributed rainfall throughout the year with less intensity is_________________?
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A. partially combined system

B. partially separate system

C. combined system

D. separate system

1389. On standard silica scale, the turbidity in drinking water should be limited to_______________?
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A. 20 ppm

B. 30 ppm

C. 50 ppm

D. 10 ppm
1390. The devices which are installed for drawing water from the sources are called______________?
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A. filters

B. intakes

C. aquiclude

D. aquifers

1391. For a given velocity of a projectile, the range is maximum when the angle of projection is___________________?
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A. 45

B. 90

C. 0

D. 30

1392. Sludge volume index is defined as the ratio of_______________?
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A. percentage of total solids by weight to percentage of sludge by volume

B. percentage of sludge by volume to percentage of suspended solids by weight

C. percentage of suspended solids by weight to percentage of sludge by volume

D. percentage of sludge by volume to percentage of total solids by weight

1393. If the weight of a body immersed in a fluid exceeds the buoyant force, then the body will________________?
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A. rise until its weight equals the buoyant force

B. tend to move downward and it may finally sink

C. float

D. none of the above

1394. The velocity of flow does not depend on_______________?
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A. length of sewer

B. roughness of sewer

C. hydraulic mean depth of sewer

D. grade of sewer

1395. A quantity measured in the C.G.S system of units has dimensions M2L3 T3/2. What numerical factor would be required to convert the quantity to SI units ?
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A. 1/10000

B. 100

C. 1

D. 1/100

1396. The self cleansing velocity for all sewers in India is usually_________________?
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A. 1.5 m/sec to 2.0 m/sec

B. 3.0 m/sec to 3.5 m/sec

C. 1.0 m/sec to 1.2 m/sec

D. less than 1.0 m/sec

1397. The pipe which is used to carry the discharge from sanitary fittings like bath rooms, kitchens etc. is called_______________?
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A. antisiphonage pipe

B. waste pipe

C. vent pipe

D. soil pipe

1398. The suitable layout of a distribution system for irregularly growing town is_______________?
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A. grid iron system

B. radial system

C. ring system

D. dead end system
1399. The suitable method for disinfection of swimming pool water is________________?
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A. chlorination

B. ultra violet rays treatment

C. by using potassium permanganate

D. lime treatment

1400. The percentage of filtered water, which is used for backwashing in rapid sand filters, is about______________?
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A. 0.2 to 0.4

B. 0.4 to 1.0

C. 2 to 4

D. 5 to 7