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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The flow in a pipe is neither laminar nor turbulent when Reynold number is

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

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Hydraulics and Fluid Mechanics in ME
The width of the bucket for a Pelton wheel is generally ________ the diameter of jet.

Double
Four times
Five times
Three times

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Hydraulics and Fluid Mechanics in ME
The error in discharge (dQ/Q) to the error in measurement of head (dH/H) over a rectangular notch is given by

dQ/Q = (3/4) × (dH/H)
dQ/Q = (1/2) × (dH/H)
dQ/Q = (dH/H)
dQ/Q = (3/2) × (dH/H)

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Hydraulics and Fluid Mechanics in ME
Liquids

Are not affected by change in pressure and temperature
None of the listed here
Cannot be compressed
Occupy definite volume

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

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

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Hydraulics and Fluid Mechanics in ME
Dynamic similarity is said to exist between the model and the prototype, if both of them

Have identical velocities
Are identical in shape, but differ only in size
Are equal in size and shape
None of these

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