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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The width of the bucket for a Pelton wheel is generally ________ the diameter of jet.

Three times
Four times
Five times
Double

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Hydraulics and Fluid Mechanics in ME
The process of diffusion of one liquid into the other through a semi-permeable membrane is called

viscosity
cohesion
surface tension
osmosis

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

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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 speed of the wheel is

10 r.p.m.
40 r.p.m.
80 r.p.m.
20 r.p.m.

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Hydraulics and Fluid Mechanics in ME
The specific gravity of an oil whose specific weight is 7.85 kN/m3, is

1
0.8
1.6
1.2

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Hydraulics and Fluid Mechanics in ME
In the case of steady flow of a fluid, the acceleration of any fluid particle is

zero
variable
zero under limiting conditions
constant

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