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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
A flow through a long pipe at constant rate is called

Unsteady uniform flow
Steady non-uniform flow
Unsteady non-uniform flow
Steady uniform flow

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Hydraulics and Fluid Mechanics in ME
According to fan laws, at constant pressure, the speed capacity and power vary

As square of density
Directly as the air or gas density
Inversely as density
Inversely as square root of density

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Hydraulics and Fluid Mechanics in ME
With the same cross-sectional area and immersed in same turbulent flow, the largest total drag will be on

a streamlined body
a circular disc of plate held normal to flow
a sphere
a cylinder

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Hydraulics and Fluid Mechanics in ME
According to fan laws, at constant speed and capacity, the pressure and power vary

Inversely as density
Inversely as square root of density
Directly as the air or gas density
As square of density

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Hydraulics and Fluid Mechanics in ME
The specific speed of a hydraulic turbine depends upon

Speed and power developed
Speed, power developed and head of water
Discharge and power developed
Speed and head of water

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Hydraulics and Fluid Mechanics in ME
The point in the immersed body through which the resultant pressure of the liquid may be taken to act is known as

center of gravity
center of pressure
metacentre
center of buoyancy

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