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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The eddy viscosity for turbulent flow is

a function of temperature only
dependent on the flow
independent of the flow
a physical property of the fluid.

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Hydraulics and Fluid Mechanics in ME
The flow rate in gear pump

More or less remains constant with increase in pressure
Increases with increase in pressure
Unpredictable
Decreases with increase in pressure

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Hydraulics and Fluid Mechanics in ME
If Hg is the gross or total head and hf is the head lost due to friction, then net or effective head (H) is given by

H = Hg - hf
H = Hg/hf
H = Hg × hf
H = Hg + hf

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Hydraulics and Fluid Mechanics in ME
A hydraulic accumulator is a device used to store _________ energy which may be supplied to a machine later on.

Pressure
None of these
Strain
Kinetic

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Hydraulics and Fluid Mechanics in ME
Hot wire anemometer is used to measure

Gas velocities
Liquid discharge
Pressure in liquids
Pressure in gases

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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.

Remain same
Increases
Decreases
None of these

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