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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
If w is the specific weight of liquid and k the depth of any point from the surface, then pressure intensity at that point will be

h/w
wh
h
w/h

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Hydraulics and Fluid Mechanics in ME
In an internal mouthpiece, the absolute pressure head at vena contracta is __________ the atmospheric pressure head by an amount equal to height of the liquid above the vena contracta.

Equal to
None of these
More than
Less than

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Hydraulics and Fluid Mechanics in ME
The major loss of energy in long pipes is due to

gradual contraction or enlargement
sudden enlargement
friction
sudden contraction

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Hydraulics and Fluid Mechanics in ME
An open tank containing liquid is made to move from rest with a uniform acceleration. The angle 0 which the free surface of liquid makes with the horizontal is such that (where a = Horizontal acceleration of the tank, and g = Acceleration due to gravity)

tanθ = a2/2g
tanθ = 2 a/g
tanθ = a/2g
tanθ = a/g

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Hydraulics and Fluid Mechanics in ME
The discharge of a double acting reciprocating pump is (where L = Length of stroke, A = Cross-sectional area of piston, and N = Speed of crank in r.p.m.)

(L.A.N)/60
2 L.A.N
L.A.N
(2 L.A.N)/60

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Hydraulics and Fluid Mechanics in ME
The force present in a moving liquid is

Gravity force
All of these
Inertia force
Viscous force

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