# Mechanical Engineering - Hydraulics and Fluid Mechanics

### Exercise :: Hydraulics and Fluid Mechanics - Section 1

41.

The body will sink down if the force of buoyancy is __________ the weight of the liquid displaced.

 A. equal to B. less than C. more than

Explanation:

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

42.

If a body floating in a liquid returns back to its original position, when given a small angular displacement, the body is said to be in

 A. neutral equilibrium B. stable equilibrium C. unstable equilibrium D. none of these

Explanation:

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

43.

The pressure measured with the help of a piezometer tube is in

 A. N/mm2 B. N/m2 C. head of liquid D. all of these

Explanation:

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

44.

The power transmitted through a pipe is (where w = Specific weight in N/m3, and Q = Discharge in m3/s)

 A. w x Q x H B. w x Q x hf C. w x Q (H - hf) D. w x Q (H + hf)

Explanation:

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

45.

In an external mouthpiece, the absolute pressure head at vena contracta is __________ the atmospheric pressure head by an amount equal to 0.89 times the height of the liquid, above the vena contracta.

 A. less than B. more than