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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The Thomson's turbine is _________ reaction turbine.

An outward flow
A mixed flow
An axial flow
An inward flow

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Hydraulics and Fluid Mechanics in ME
Hydraulic accumulator is used for

Supplying large quantities of oil for very short duration
Accumulating oil
Generally high pressures to operate hydraulic machines
Supplying energy when main supply fails

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Hydraulics and Fluid Mechanics in ME
Coefficient of discharge for a totally submerged orifice as compared to that for an orifice discharging free is

nearly half
slightly more
equal
slightly less

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Hydraulics and Fluid Mechanics in ME
For pipes, laminar flow occurs when Roynolds number is

less than 4000
less than 2000
more than 4000
between 2000 and 4000

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Hydraulics and Fluid Mechanics in ME
According to fan laws, for fans having constant wheel diameter, the air or gas capacity varies

Cube of fan speed
Square of fan speed
Directly as fan speed
Square root of fan speed

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Hydraulics and Fluid Mechanics in ME
A Pelton wheel develops 1750 kW under a head of 100 meters while running at 200 r.p.m. and discharging 2500 liters of water per second. The unit discharge of wheel is

1.5 m3/s
0.25 m3/s
0.5 m3/s
2.5 m3/s

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