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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
An opening in the side of a tank or vessel such that the liquid surface with the tank is below the top edge of the opening, is called

Notch
Weir
Orifice
None of these

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

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

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Hydraulics and Fluid Mechanics in ME
The efficiency of a Pelton wheel working under constant head ________ with the increase in power.

None of these
Increases
Decreases
Remain same

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Hydraulics and Fluid Mechanics in ME
The unit speed of the turbine runner is

N/√H
N/H²
N/H
N/H3/2

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Hydraulics and Fluid Mechanics in ME
Dynamic viscosity of most of the gases with rise in temperature

unpredictable
decreases
remains unaffected
increases

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Hydraulics and Fluid Mechanics in ME
The coefficient of viscosity may be determined by

All of these
Capillary tube method
Rotating cylinder method
Orifice type viscometer

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