Pressure variation for compressible fluid is maximum for which of the following kind of process?

A)
Adiabatic
B)
Quasi Static
C)
Isothermal
D)
None of the above

Correct Answer : Option (C) :   Isothermal

Explanation : Due to constant temperature, pressure variation for compressible fluid is maximum for isothermal process.

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Free surface of a liquid tends to contract to the smallest possible area due to force of
A)
Friction
B)
Surface tension
C)
Viscosity
D)
Cohesion

Correct Answer :   Surface tension

Which of the following turbine is preferred for a specific speed of 60 to 300 r.p.m.?
A)
Kaplan turbine
B)
Pelton wheel
C)
Francis turbine
D)
None of the above

Correct Answer :   Francis turbine

If 850 kg liquid occupies volume of one cubic meter, men 0.85 represents its
A)
Specific mass
B)
Specific gravity
C)
Specific weight
D)
Specific density

Correct Answer :   Specific gravity

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