Fluid is a substance that - Hydraulics and Fluid Mechanics Quiz

Mechanical Engineering : Hydraulics and Fluid Mechanics - Quiz(MCQ)

Fluid is a substance that

Always expands until it fills any container

Cannot remain at rest under action of any shear force

Cannot be subjected to shear forces

Has the same shear stress at a point regardless of its motion

Correct Answer : Option (B) : Cannot remain at rest under action of any shear force

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Free surface of a liquid tends to contract to the smallest possible area due to force of

Friction

Surface tension

Viscosity

Cohesion

Correct Answer : Surface tension

Which of the following turbine is preferred for a specific speed of 60 to 300 r.p.m.?

Kaplan turbine

Pelton wheel

Francis turbine

None of the above

Correct Answer : Francis turbine

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Specific mass

Specific gravity

Specific weight

Specific density

Correct Answer : Specific gravity