Exercise: Hydraulics And Fluid Mechanics

Questions for: Hydraulics And Fluid Mechanics

The metacentric heights of two floating bodies A and B are 1 m and 1.5 m respectively. Select the correct statement.
A:
The bodies A and B have equal stability
B:
The body A is more stable than body B
C:
The body B is more stable than body A
D:
The bodies A and B are unstable
Answer: C
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The centre of buoyancy is the centre of area of the immersed body.
A:
Correct
B:
Incorrect
C:
D:
Answer: A
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The weight per unit volume of a liquid at a standard temperature and pressure is called
A:
specific weight
B:
mass density
C:
specific gravity
D:
none of these
Answer: A
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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
C:
D:
Answer: A
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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: C
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