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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The kinematic viscosity of an oil (in stokes) whose specific gravity is 0.95 and viscosity 0.011 poise, is

0.0116 stoke
0.611 stoke
0.0611 stoke
0.116 stoke

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Hydraulics and Fluid Mechanics in ME
The pressure measured with the help of a pressure gauge is called

Absolute pressure
Gauge pressure
Atmospheric pressure
Mean pressure

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Hydraulics and Fluid Mechanics in ME
Theoretical power required (in watts) to drive a reciprocating pump is (where w = Specific weight of liquid to be pumped in N/m3, Q = Discharge of the pump in m3/s, Hs = Suction head in meters, and Hd = Delivery head in meters)

wQHd
wQ (Hs + Hd)
wQHs
wQ (Hs - Hd)

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Hydraulics and Fluid Mechanics in ME
The cavitation in a hydraulic machine

Causes noise and vibration of various parts
Causes sudden drop in power output and efficiency
All of these
Reduces the discharge of a turbine

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Hydraulics and Fluid Mechanics in ME
Coefficient of discharge Cd is equal to (where Cc = Coefficient of contraction, Cv = Coefficient of velocity, and Cr = Coefficient of resistance)

Cc × Cr
Cv × Cr
Cc/Cr
Cc × Cv

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Hydraulics and Fluid Mechanics in ME
The pressure of liquid at throat in a Venturimeter is __________ than that at inlet.

Lower
None of these
Higher
Same

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MORE MCQ ON Hydraulics and Fluid Mechanics in ME

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