Exercise: Hydraulics And Fluid Mechanics

Questions for: Hydraulics And Fluid Mechanics

The variation in the volume of a liquid with the variation of pressure is called its
A:
surface tension
B:
compressibility
C:
capillarity
D:
viscosity
Answer: B
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A fluid whose viscosity does not change with the rate of deformation or shear strain is known as
A:
real fluid
B:
ideal fluid
C:
newtonian fluid
D:
non-newtonian fluid
Answer: C
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The unit of kinematic viscosity in S. I. units is
A:
N-m/s
B:
N-s/m2
C:
m2/s
D:
N-m
Answer: C
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The tangential velocity of the water element having a free vortex is
A:
directly proportional to its distance from the centre
B:
inversely proportional to its distance from the centre
C:
directly proportional to its (distance)2 from the centre
D:
inversely proportional to its (distance)2 from the centre
Answer: B
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The hydraulic mean depth for a circular pipe of diameter (d) is
A:
d/6
B:
d/4
C:
d/2
D:
d
Answer: B
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