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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
Hydrometer is used to determine

specific gravity of solids
specific gravity of liquids
relative humidity
specific gravity of gases

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Hydraulics and Fluid Mechanics in ME
A flow is called sub-sonic, if the Mach number is

Less than unity
Unity
More than 6
Between 1 and 6

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Hydraulics and Fluid Mechanics in ME
A weir, generally, used as a spillway of a dam is

Ogee weir
Narrow crested weir
Broad crested weir
Submerged weir

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Hydraulics and Fluid Mechanics in ME
The liquid used in manometers should have

High density
High surface tension
Low density
Low surface tension

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

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

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Hydraulics and Fluid Mechanics in ME
In order that flow takes place between two points in a pipeline, the differential pressure between these points must be more than

viscosity
surface friction
All of these
frictional force

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MORE MCQ ON Hydraulics and Fluid Mechanics in ME

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