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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The depth of the center of pressure on a vertical rectangular gate 8 m wide and 6 m high, when the water surface coincides with the top of the gate, is

4.0 m
3.0 m
2.5 m
2.4 m

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Hydraulics and Fluid Mechanics in ME
The overall efficiency for a Pelton wheel lies between

0.65 to 0.75
0.85 to 0.90
0.50 to 0.65
0.75 to 0.85

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Hydraulics and Fluid Mechanics in ME
Bernoulli's equation is applied to

All of the listed here
Venturimeter
Orifice meter
Pitot tube

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Hydraulics and Fluid Mechanics in ME
The efficiency of a hydraulic press is given by (where W = Weight lifted by ram, P = Force applied on plunger, A = Area of ram, and a = Area of plunger)

(p/W) × (A/a)
(W/p) × (A/a)
(p/W) × (a/A)
(W/p) × (a/A)

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Hydraulics and Fluid Mechanics in ME
The loss of head due to friction in a pipe of uniform diameter in which a viscous flow is taking place, is (where RN = Reynold number)

1/RN
4/RN
64/RN
16/RN

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Hydraulics and Fluid Mechanics in ME
An air vessel is provided at the summit in a siphon to

Avoid interruption in the flow
Maintain pressure difference
Increase velocity
Increase discharge

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