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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
All the terms of energy in Bernoulli’s equation have dimension of

length
mass
energy
work

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Hydraulics and Fluid Mechanics in ME
One stoke is equal to

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

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Hydraulics and Fluid Mechanics in ME
A nozzle is generally made of

Convergent shape
Convergent-divergent shape
Cylindrical shape
Divergent shape

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Hydraulics and Fluid Mechanics in ME
Discharge (Q) of a centrifugal pump is given by (where D = Diameter of impeller at inlet, b = Width of impeller at inlet, and Vf = Velocity of flow at inlet)

Q = π.D.Vf
Q = D.b.Vf
Q = π.b.Vf
Q = π.D.bf.V

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Hydraulics and Fluid Mechanics in ME
The ratio of quantity of liquid discharged per second from the pump to the quantity of liquid passing per second through the impeller is known as

Overall efficiency
Manometric efficiency
Volumetric efficiency
Mechanical efficiency

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Hydraulics and Fluid Mechanics in ME
One horsepower is equal to

735 watts
75 watts
102 watts
550 watts

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