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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
A Pelton wheel develops 1750 kW under a head of 100 meters while running at 200 r.p.m. and discharging 2500 liters of water per second. The unit discharge of wheel is

0.5 m3/s
2.5 m3/s
1.5 m3/s
0.25 m3/s

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Hydraulics and Fluid Mechanics in ME
A hydraulic accumulator is a device used to store _________ energy which may be supplied to a machine later on.

None of these
Strain
Kinetic
Pressure

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Hydraulics and Fluid Mechanics in ME
Unit of surface tension is

It has no units
Both of the above
Energy/unit area
Velocity/unit area

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Hydraulics and Fluid Mechanics in ME
A Pelton wheel develops 1750 kW under a head of 100 meters while running at 200 r.p.m. and discharging 2500 liters of water per second. The unit speed of the wheel is

80 r.p.m.
20 r.p.m.
40 r.p.m.
10 r.p.m.

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Hydraulics and Fluid Mechanics in ME
A flow is called super-sonic if the

Discharge is difficult to measure
Velocity of flow is very high
None of these
Mach number is between 1 and 6

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Hydraulics and Fluid Mechanics in ME
Low specific speed of turbine implies it is

Impulse turbine
Propeller turbine
Francis turbine
Any one of the above

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