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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
To avoid an interruption in the flow of a syphon, an air vessel is provided

at the inlet
at the outlet
at the summit
ay nay point between inlet and outlet

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Hydraulics and Fluid Mechanics in ME
The specific weight of water is 1000 kg/m3

At mean sea level
All of the listed here
At 4°C temperature
At normal pressure of 760 mm

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Hydraulics and Fluid Mechanics in ME
The discharge through a reaction turbine with increase in unit speed

Remain unaffected
Decreases
First increases and then decreases
Increases

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Hydraulics and Fluid Mechanics in ME
If the net positive suction head (NPSH) requirement for the pump is not satisfied, then

Efficiency will be low
No flow will take place
Excessive power will be consumed
Cavitation will be formed

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

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Hydraulics and Fluid Mechanics in ME
Size of a venturimeter is specified by

angle of diverging section
both pipe diameter as well as throat diameter
throat diameter
pipe diameter

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