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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The volume of a fluid __________ as the pressure increases.

Decreases
Remains same
Increases
None of these

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Hydraulics and Fluid Mechanics in ME
In a depressed nappe

The pressure below the nappe is negative
The pressure above the nappe is atmospheric
The pressure below the nappe is atmospheric
The pressure above the nappe is negative

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

Penstock
Blade inlet
Inlet of draft rube
Guide blade

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Hydraulics and Fluid Mechanics in ME
Re-entrant or Borda's mouthpiece is an __________ mouthpiece.

Internal
External
Both A and B
None of these

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Hydraulics and Fluid Mechanics in ME
Which of the following turbine is preferred for 0 to 25 m head of water?

None of these
Pelton wheel
Kaplan turbine
Francis turbine

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Hydraulics and Fluid Mechanics in ME
A tank of uniform cross-sectional area (A) containing liquid upto height (H1) has an orifice of cross-sectional area (a) at its bottom. The time required to empty the tank completely will be

(2AH₁3/2)/(Cd × a√2g)
(2AH₁)/(Cd × a√2g)
(2AH₁²)/(Cd × a√2g)
(2A√H₁)/(Cd × a√2g)

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