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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The unit of surface tension is

N/m2
N/m
N/m3
N-m

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

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

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Hydraulics and Fluid Mechanics in ME
The gross or total head of the turbine is the ___________ of the water levels at the head race and tail race.

Sum
Product
None of these
Difference

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Hydraulics and Fluid Mechanics in ME
An ideal flow of any fluid must fulfill the following

Newton’s law of motion
Newton’s law of viscosity
Continuity equation
Pascal’ law

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

Impulse turbine
Francis turbine
None of the listed here
Propeller turbine

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Hydraulics and Fluid Mechanics in ME
The flow in a pipe is turbulent when Reynold number is

None of these
More than 2800
Less than 2000
Between 2000 and 2800

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