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Hydraulics and Fluid Mechanics in ME

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

Viscous force
Pressure force
Gravity force
Inertia force

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Hydraulics and Fluid Mechanics in ME
Which place in hydraulic turbine is most susceptible for cavitations?

Guide blade
Penstock
Blade inlet
Inlet of draft rube

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

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Hydraulics and Fluid Mechanics in ME
Which of the following is used to measure the discharge ?

pitot tube
venturimeter
current meter
hotwire anemometer

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Hydraulics and Fluid Mechanics in ME
According to fan laws, for fans having constant wheel diameter, the pressure varies

Square root of fan speed
Directly as fan speed
Cube of fan speed
Square of fan speed

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

Pressure
Flow
Shape
Volume

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