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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The discharge through a channel of circular section will be maximum when the depth of water is __________ the diameter of the circular channel.

0.95 times
0.81 times
0.34 times
0.67 times

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Hydraulics and Fluid Mechanics in ME
According to Manning's formula, the discharge through an open channel is (where M = Manning's constant)

A1/2 × M2/3 × m × i
A2/3 × M1/3 × m × i
A × M × m1/2 × i2/3
A × M × m2/3 × i1/2

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Hydraulics and Fluid Mechanics in ME
The maximum hydraulic efficiency of an impulse turbine is (where φ = Angle of blade tip at outlet)

(1 - sin φ)/2
(1 + sin φ)/2
(1 + cos φ)/2
(1 - cos φ)/2

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Hydraulics and Fluid Mechanics in ME
The product of mass and acceleration of flowing liquid is called

Pressure force
Gravity force
Inertia force
Viscous force

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

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Hydraulics and Fluid Mechanics in ME
One stoke is equal to

10-3 m2/s
10-6 m2/s
10-4 m2/s
10-2 m2/s

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