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Hydraulics and Fluid Mechanics in ME

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

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

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Hydraulics and Fluid Mechanics in ME
The flow in which the velocity vector is identical in magnitude and direction at every point, for any given instant, is known as

one dimensional flow
turbulent flow
uniform f^w
steady flow

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Hydraulics and Fluid Mechanics in ME
A moving fluid mass may be brought to a static equilibrium position, by applying an imaginary inertia force of the same magnitude as that of the accelerating force but in the opposite direction. This statement is called

Pascal’s law
D-Alembert’s principle
Archimedes’s principle
None of these

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

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Hydraulics and Fluid Mechanics in ME
The total energy line lies over the centre line of the pipe by an amount equal to

Pressure head
Pressure head + velocity head
Pressure head - velocity head
Velocity head

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Hydraulics and Fluid Mechanics in ME
Head developed by a centrifugal pump is

Proportional to diameter of impeller
Proportional to speed of impeller
Proportional to diameter and speed of impeller
None of these

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