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Hydraulics and Fluid Mechanics in ME

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

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

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Hydraulics and Fluid Mechanics in ME
The maximum efficiency of jet propulsion of a ship with inlet orifices at right angles to the direction of motion of ship, is

0.6
0.5
0.8
0.4

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Hydraulics and Fluid Mechanics in ME
The specific speed of a centrifugal pump, delivering 750 liters of water per second against a head of 15 meters at 725 r.p.m., is

248 r.p.m
24.8 r.p.m.
48.2 r.p.m
82.4 r.p.m.

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Hydraulics and Fluid Mechanics in ME
A hydraulic intensifier normally consists of

Two cylinders, two rams and a storage device
Two coaxial rams and two cylinders
A cylinder, a piston, storage tank and control valve
A cylinder and a ram

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Hydraulics and Fluid Mechanics in ME
In one dimensional flow, the flow

Takes place in curve
Takes place in one direction
Is steady and uniform
Takes place in straight line

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Hydraulics and Fluid Mechanics in ME
In an internal mouthpiece, the absolute pressure head at vena contracta is __________ the atmospheric pressure head by an amount equal to height of the liquid above the vena contracta.

None of these
Less than
Equal to
More than

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