# Mechanical Engineering - Hydraulics and Fluid Mechanics

### Exercise :: Hydraulics and Fluid Mechanics - Section 8

31.

The velocity of flow is same at all points in the cross-section of a channel.

 A. True B. False

Explanation:

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

32.

The length of a liquid stream while flowing over a weir __________ at the ends of the sill.

 A. expands B. does not change C. contracts

Explanation:

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

33.

Select the wrong statement

 A. An equivalent pipe is treated as an ordinary pipe for all calculations B. The length of an equivalent pipe is equal to that of a compound pipe C. The discharge through an equivalent pipe is equal to that of a compound pipe D. The diameter of an equivalent pipe is equal to that of a compound pipe

Explanation:

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

34.

The velocity through a channel of circular section will be maximum when the depth of water is __________ the diameter of the circular channel.

 A. 0.34 times B. 0.67 times C. 0.81 times D. 0.95 times

Explanation:

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

35.

In a footstep bearing, if the radius of the shaft is doubled, then the torque required to overcome the viscous resistance will be

 A. double B. four times C. eight times D. sixteen times