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
Answer: Option B
Explanation:
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
Answer: Option B
Explanation:
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
Answer: Option C
Explanation:
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 )
Answer: Option C
Explanation:
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.
Answer: Option A
Explanation:
