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Hydraulics and Fluid Mechanics in ME

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

1.2 times
Equal to
Double
1.8 times

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Hydraulics and Fluid Mechanics in ME
The buoyancy depends on

depth of immersion
viscosity of the liquid
mass of liquid displaced
pressure of the liquid displaced

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Hydraulics and Fluid Mechanics in ME
The efficiency of a hydraulic press is given by (where W = Weight lifted by ram, P = Force applied on plunger, A = Area of ram, and a = Area of plunger)

(W/p) × (A/a)
(p/W) × (A/a)
(p/W) × (a/A)
(W/p) × (a/A)

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Hydraulics and Fluid Mechanics in ME
Barometer is used to measure

Difference of pressure between two points
Atmospheric pressure
Pressure in pipes, channels etc.
Very low pressure

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Hydraulics and Fluid Mechanics in ME
The discharge over a triangular notch is

Directly proportional to H5/2
Inversely proportional to H3/2
Directly proportional to H3/2
Inversely proportional to H5/2

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Hydraulics and Fluid Mechanics in ME
Reaction turbines are used for

High head and low discharge
Low head and high discharge
Low head
High head

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