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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The value of coefficient of discharge is __________ the value of coefficient of velocity.

Less than
Same as
More than
None of these

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Hydraulics and Fluid Mechanics in ME
In a free nappe,

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

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Hydraulics and Fluid Mechanics in ME
The pressure at a point 4 m below the free surface of water is

29.24 kPa
39.24 kPa
19.24 kPa
49.24 kPa

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Hydraulics and Fluid Mechanics in ME
The increase of temperature results in

increase in viscosity of liquid
decrease in viscosity of gas
increase in viscosity of gas
decrease in viscosity of liquid

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Hydraulics and Fluid Mechanics in ME
The value of friction factor ‘f’ for smooth pipes for Reynolds number 106 is approximately equal to

0.1
0.001
0.01
0.0001

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Hydraulics and Fluid Mechanics in ME
The type of centrifugal pump preferred for a specific speed of 20 r.p.m. is

Medium speed pump with radial flow at outlet
High speed pump with axial flow at outlet
Slow speed pump with radial flow at outlet
High speed pump with radial flow at outlet

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