# Civil Engineering - UPSC Civil Service Exam Questions

6.

A sewer is laid from a manhole A to a manhole B, 250 m apart along a downward gradient of 1 in 250. If the reduced level of the invert at A is 205.75 m and the height of the boring rod is 3 m, then, reduced level of the sight rail at B, is

 A. 202.75 m B. 206.75 m C. 208.75 m D. 211.75 m

Explanation:

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

7.

A body of mass 4 kg moving at 12 m/s collides with another body of mass 8 kg and adheres to it. The resultant velocity of the total mass in m/s will be

 A. 4 B. 5 C. 6 D. 7

Explanation:

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

8.

A soil sample is having a specific gravity of 2.60 and a void ratio of 0.78. The water content in percentage required to fully saturate the soil at the void ratio would be

 A. 10 B. 30 C. 50 D. 70

Explanation:

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

9.

A rectangular channel carries a discharge of 5 m3/s. The channel is 2 m wide. What is the critical depth of the flow ?

 A. 1.25 m B. 1.07 m C. 0.565 m D. 0.86 m

Explanation:

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

10.

The discharge per unit drawdown at the well is known as :

 A. Specific yield B. Specific storage C. Specific retention D. Specific capacity