# Civil Engineering - UPSC Civil Service Exam Questions

16.

A clay sample has a void ratio of 0.50 in dry state and specific gravity of solids = 2.70. Its shrinkage limit will be

 A. 12% B. 13.5% C. 18.5% D. 22%

Explanation:

17.

A catchment has an area of 150 hectares and a run-off/rainfall ratio of 0.40. If due to 10 cm rainfall over the catchment, a stream flow at the catchment outlet lasts for 10 hours, what is the average stream flow in the period ?

 A. 60, 000 m3/hour B. 100 m3/minute C. 3.5 m3/s D. 1.33 m3/s

Explanation:

No answer description available for this question. Let us discuss.

18.

The head loss in a pipe of diameter d, carrying oil at a flow rate Q over a distance l is h. The pipe is replaced by another with half the diameter, all other things remaining the same. The head loss in this case will be

 A. 0.5 h B. 2.0 h C. 8.0 h D. 32.0 h

Explanation:

No answer description available for this question. Let us discuss.

19.

A very tiny sphere is settling down in a viscous liquid at Reynolds number = 0.2. Its drag coefficient is equal to

 A. 320 B. 120 C. 80 D. 5

Explanation:

No answer description available for this question. Let us discuss.

20.

An ascending gradient of 1 in 100 meets a descending gradient of 1 in 50, The length of summit curve required to provide overtaking sight distance of 500 m will be

 A. 938 m B. 781m C. 470 m D. 170 m