Exercise: Hydraulics And Fluid Mechanics

Questions for: Hydraulics And Fluid Mechanics

The velocity at which the flow changes from laminar flow to turbulent flow is called
A:
critical velocity
B:
velocity of approach
C:
sub-sonic velocity
D:
super-sonic velocity
Answer: A
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A flow whose streamline is represented by a straight line, is called __________ dimensional flow.
A:
one
B:
two
C:
three
D:
four
Answer: A
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The ratio of the inertia force to the viscous force is called
A:
Reynold's number
B:
Froude's number
C:
Weber's number
D:
Euler's number
Answer: A
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The flow in a pipe or channel is said to be non-uniform when
A:
the liquid particles at all sections have the same velocities
B:
the liquid particles at different sections have different velocities
C:
the quantity of liquid flowing per second is constant
D:
each liquid particle has a definite path
Answer: B
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The hydraulic gradient line lies over the centre line of the pipe by an amount equal to the
A:
pressure head
B:
velocity head
C:
pressure head + velocity head
D:
pressure head - velocity head
Answer: A
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