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Hydraulics and Fluid Mechanics in ME

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

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

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Hydraulics and Fluid Mechanics in ME
The power developed by a turbine is (where H = Head of water under which the turbine is working)

Inversely proportional to H3/2
Directly proportional to H1/2
Directly proportional to H3/2
Inversely proportional to H1/2

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Hydraulics and Fluid Mechanics in ME
A channel is said to be of most economical cross-section, if

It gives maximum discharge for a given cross-sectional area and bed slope
All of these
It involves lesser excavation for the designed amount of discharge
It has minimum wetted perimeter

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Hydraulics and Fluid Mechanics in ME
The Newton's law of resistance is based on the assumption that the

Fluid particles do not exert any influence on one another
Space around the body is completely filled with the fluid
Planes of the body are completely smooth
All of these

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Hydraulics and Fluid Mechanics in ME
Which of the following is used to measure the discharge ?

hotwire anemometer
current meter
venturimeter
pitot tube

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Hydraulics and Fluid Mechanics in ME
The losses are more in

laminar flow
turbulent flow
transition flow
critical flow

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