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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
Which of the following instrument can be used for measuring speed of a submarine moving in deep sea

pitot tube
rotameter
Venturimeter
hot wire anemometer

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

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

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Hydraulics and Fluid Mechanics in ME
A vessel of 4 m3 contains oil which weighs 30 kN. The specific weight of the oil is

10 kN/m3
7.5 kN/m3
6 kN/m3
4.5 kN/m3

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Hydraulics and Fluid Mechanics in ME
Specific speed for reaction turbines ranges from

0 to 4.5
80 to 200
250 to 300
10 to 100

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Hydraulics and Fluid Mechanics in ME
Flow occurring in a pipeline when a valve is being opened is

steady
unsteady
laminar
vortex

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Hydraulics and Fluid Mechanics in ME
The body will sink down if the force of buoyancy is __________ the weight of the liquid displaced.

Equal to
Less than
None of these
More than

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