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Mechanical Engineering - Hydraulics and Fluid Mechanics

Exercise : Hydraulics and Fluid Mechanics - Section 6
21.
The depth of centre of pressure (h) for a vertically immersed surface from the liquid surface is given by (where IG = Moment of inertia of the immersed surface about horizontal axis through its centre of gravity, A = Area of immersed surface, and x = Depth of centre of gravity of the immersed surface from the liquid surface)
Answer: Option
Explanation:
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22.
The velocity at which the turbulent flow starts is known as higher critical velocity.
Yes
No
Answer: Option
Explanation:
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23.
According to Francis formula, the discharge over a rectangular weir is (where n = Number of end contractions)
Cd(L - nH)2gH
Cd(L - 0.1nH)2gH3/2
Cd(L - nH)2gH2
Cd(L - 0.2nH)2gH5/2
Answer: Option
Explanation:
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24.
The specific weight is also known as weight density.
Correct
Incorrect
Answer: Option
Explanation:
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25.
In a lockgate, the reaction between two gates is (where P = Resultant pressure on the lock gate, and α = Inclination of the gate with the normal to the side of the lock)
P / 2sinα
Answer: Option
Explanation:
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