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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
Coefficient of discharge Cd is equal to (where Cc = Coefficient of contraction, Cv = Coefficient of velocity, and Cr = Coefficient of resistance)

Cv × Cr
Cc/Cr
Cc × Cr
Cc × Cv

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Hydraulics and Fluid Mechanics in ME
Any change in load is adjusted by adjusting following parameter on turbine

Blade velocity
Absolute velocity
Net head
Flow

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

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Hydraulics and Fluid Mechanics in ME
A hydraulic intensifier normally consists of

A cylinder, a piston, storage tank and control valve
Two cylinders, two rams and a storage device
Two coaxial rams and two cylinders
A cylinder and a ram

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Hydraulics and Fluid Mechanics in ME
Fluid is a substance which offers no resistance to change of

Shape
Volume
Pressure
Flow

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Hydraulics and Fluid Mechanics in ME
The viscosity of water is __________ than that of mercury.

Same as
Higher
None of these
Lower

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