The increase in pressure at the outer edge of a drum of radius (r) completely filled up with liquid of density (Ï) and rotating at (Ï‰) rad/s is

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

Ï Ï‰Â² rÂ²

2Ï Ï‰Â² rÂ²

Ï Ï‰Â² rÂ²/2

Ï Ï‰Â² rÂ²/4

Correct Answer : Option (C) : Ï Ï‰Â² rÂ²/2

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

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Viscosity

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Correct Answer : Surface tension

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

Kaplan turbine

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None of the above

Correct Answer : Francis turbine

If 850 kg liquid occupies volume of one cubic meter, men 0.85 represents its

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Specific weight

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Correct Answer : Specific gravity