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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
Hydrometer is used to determine

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

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Hydraulics and Fluid Mechanics in ME
If the net positive suction head (NPSH) requirement for the pump is not satisfied, then

Cavitation will be formed
Excessive power will be consumed
No flow will take place
Efficiency will be low

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Hydraulics and Fluid Mechanics in ME
In a centrifugal pump casing, the flow of water leaving the

Axial
Centrifugal
Vortex
Radial

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

Equal to
1.2 times
Double
1.8 times

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Hydraulics and Fluid Mechanics in ME
The units of dynamic or absolute viscosity are

newton-sec² per meter
newton-sec per meter
metres² per sec
kg sec/meter

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Hydraulics and Fluid Mechanics in ME
Which of the following hydraulic unit is used for transmitting increased or decreased torque to the driven shaft?

Hydraulic accumulator
Hydraulic intensifier
Hydraulic torque converter
Hydraulic ram

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