# 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
12%
13.5%
18.5%
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 ?
60, 000 m3/hour
100 m3/minute
3.5 m3/s
1.33 m3/s
Explanation:
No answer description is available. Let's 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
0.5 h
2.0 h
8.0 h
32.0 h
Explanation:
No answer description is available. Let's discuss.

19.
A very tiny sphere is settling down in a viscous liquid at Reynolds number = 0.2. Its drag coefficient is equal to
320
120
80
5