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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The maximum efficiency of jet propulsion of a ship with inlet orifices at right angles to the direction of motion of ship, is

0.4
0.5
0.8
0.6

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Hydraulics and Fluid Mechanics in ME
A venturi-flume is used to measure

Discharge of liquid
Pressure of liquid
Pressure difference between two points in a pipe
Pressure difference between two points in a channel

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

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

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Hydraulics and Fluid Mechanics in ME
The discharge over a triangular notch is

Directly proportional to H5/2
Directly proportional to H3/2
Inversely proportional to H5/2
Inversely proportional to H3/2

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Hydraulics and Fluid Mechanics in ME
A structure, whose width is __________ the width of the channel, is called a flumed structure.

More than
None of these
Less than
Equal

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Hydraulics and Fluid Mechanics in ME
The cavitation in a hydraulic machine

All of these
Reduces the discharge of a turbine
Causes noise and vibration of various parts
Causes sudden drop in power output and efficiency

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