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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The viscosity of water at 20°C is

One centipoise
One centistoke
One poise
One stoke

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Hydraulics and Fluid Mechanics in ME
In impulse Turbine, energy available at the inlet is in the form of

Kinetic energy
None of these
Potential Energy
Strain Energy

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Hydraulics and Fluid Mechanics in ME
In a depressed nappe

The pressure above the nappe is atmospheric
The pressure below the nappe is negative
The pressure above the nappe is negative
The pressure below the nappe is atmospheric

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Hydraulics and Fluid Mechanics in ME
The ratio of quantity of liquid discharged per second from the pump to the quantity of liquid passing per second through the impeller is known as

Overall efficiency
Mechanical efficiency
Manometric efficiency
Volumetric efficiency

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Hydraulics and Fluid Mechanics in ME
At the center line of a pipe flowing under pressure where the velocity gradient is zero, the shear stress will be

Minimum
Maximum
Zero
Could be any value

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Hydraulics and Fluid Mechanics in ME
According to Darcy's formula, the loss of head due to friction in the pipe is (where f = Darcy's coefficient, l = Length of pipe, v = Velocity of liquid in pipe, and d = Diameter of pipe)

flv²/gd
flv²/2gd
3flv²/2gd
4flv²/2gd

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