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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
When the water level on the downstream side of a weir is above the top surface of a weir, the weir is known as

Broad-crested weir
Narrow-crested weir
Ogee weir
Submerged weir

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Hydraulics and Fluid Mechanics in ME
The centre of pressure for a vertically immersed surface lies at a distance equal to __________ the centre of gravity.

IG / Ax̅ below
IG / Ax̅ above
Ax̅ / IG above
Ax̅ / IG below

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Hydraulics and Fluid Mechanics in ME
Air vessels in reciprocating pump are used to

Smoothen flow
Increase pump efficiency
Reduce acceleration to minimum
Save pump from cavitations

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Hydraulics and Fluid Mechanics in ME
Size of a venturimeter is specified by

angle of diverging section
throat diameter
pipe diameter
both pipe diameter as well as throat diameter

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Hydraulics and Fluid Mechanics in ME
Working principle of dead weight pressure gauge tester is based on

Dalton’s law of partial pressure
Pascal’s law
Newton’s law of viscosity
Avogadro’s hypothesis

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Hydraulics and Fluid Mechanics in ME
Indicator diagram of a reciprocating pump is a graph between

Pressure vs. speed
Flow vs. speed
Flow vs. swept volume
Pressure in cylinder vs. swept volume

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