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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

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

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Hydraulics and Fluid Mechanics in ME
Manometer is used to measure

difference of pressure between two points
very low pressure
atmospheric pressure
pressure in pipes, channels etc

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Hydraulics and Fluid Mechanics in ME
The Bernoulli's equation is based on the assumption that

There is no loss of energy of the liquid flowing
No force except gravity acts on the fluid
The velocity of flow is uniform across any cross-section of the pipe
All of these

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Hydraulics and Fluid Mechanics in ME
For hypersonic flow, the Mach number is

greater than 2
greater than 4
unity
greater than unity

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Hydraulics and Fluid Mechanics in ME
The unit power developed by a turbine is (where P = Power developed by the turbine under a head of water (H).

P/ H3/2
P/ H
P/ H²
P/ √H

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Hydraulics and Fluid Mechanics in ME
The center of gravity of the volume of the liquid displaced by an immersed body is called

center of pressure
center of buoyancy
center of gravity
metacentre

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