Civil Engineering - UPSC Civil Service Exam Questions

41. 

A hydro-electric reservoir can supply water continuously at a rate of 100 m3/s. The head is 75 m. The theoretical power that can be developed is

A. 10000 mhp
B. 100000 mhp
C. 7500 mhp
D. 7500 kW

Answer: Option B

Explanation:

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42. 

The structure shown in the given figure is stable if

A. x = 2y
B. 2x = y
C. 2x = y
D. x = 2y

Answer: Option D

Explanation:

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43. 

Flow happens at a critical depth of 0.5 m in a rectangular channel of 4 m width. What is the value of discharge ?

A. 5.4 m3/s
B. 5.1 m3/s
C. 4.9 m3/s
D. 4.4 m3/s

Answer: Option D

Explanation:

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44. 

Which one of the following statements is NOT correct ?

A. In combined sewerage system, one set of sewers is laid for both sanitary sewage and storm water.
B. In separate system, the design of sewage system is economical
C. In separate system, self cleaning velocities are not available and occasional flushing is required.
D. As the sewage is diluted by storm water in combined sewage system, cost of treatment is low.

Answer: Option C

Explanation:

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45. 

A mild steel bar of square cross-section 40 mm x 40 mm is 400 mm long. It is subjected to a longitudinal tensile stress of 440 N/mm2 and lateral compressive stress is 200 N/mm2 in perpendicular directions. E = 2 x 10-5 N/mm2, μ = 0.3. What is the approximate elongation of tht bar in the longitudinal direction ?

A. 0.44 mm
B. 088 mm
C. 0.22 mm
D. 1 mm

Answer: Option D

Explanation:

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