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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
Which place in hydraulic turbine is most susceptible for cavitations?

Guide blade
Inlet of draft rube
Blade inlet
Penstock

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Hydraulics and Fluid Mechanics in ME
Two pipe systems can be said to be equivalent, when the following quantities are same

Flow and length
Friction factor and diameter
Length and diameter
Friction loss and flow

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Hydraulics and Fluid Mechanics in ME
The gross or total head of the turbine is the ___________ of the water levels at the head race and tail race.

Product
Difference
Sum
None of these

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Hydraulics and Fluid Mechanics in ME
The specific weight of water is 1000 kg/m”

at mean sea level
at 4°C temperature
All listed here
at normal pressure of 760 mm

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Hydraulics and Fluid Mechanics in ME
Bernoulli equation deals with the law of conservation of

work
energy
momentum
mass

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Hydraulics and Fluid Mechanics in ME
According to equation of continuity,

a1/v1 = a2/v2
a1v1 = a2v2
w1a1 = w2a2
w1v1 = w2v2

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