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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The height of a water column equivalent to a pressure of 0.15 MPa is

25.3 m
15.3 m
35.3 m
45.3 m

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Hydraulics and Fluid Mechanics in ME
The correct relationship among displacement thickness d, momentum thickness m and energy thickness e is

d > m > e
e > d > m
d > e > m
e > m > d

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Hydraulics and Fluid Mechanics in ME
In a reciprocating pump, air vessels are used to

Increase delivery head
Reduce suction head
Smoothen the flow
Reduce acceleration head

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Hydraulics and Fluid Mechanics in ME
Pitot tube is used for measurement of

dsscharge
flow
pressure
velocity

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Hydraulics and Fluid Mechanics in ME
The error in discharge (dQ/Q) to the error in measurement of head (dH/H) over a triangular notch is given by

dQ/Q = 3 × (dH/H)
dQ/Q = 3/2 × (dH/H)
dQ/Q = 2 × (dH/H)
dQ/Q = 5/2 × (dH/H)

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Hydraulics and Fluid Mechanics in ME
A double overhung Pelton wheel has

Four jets
Two runners
Two jets
Four runners

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