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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The velocity corresponding to Reynold number of 2800, is called

Higher critical velocity
Sub-sonic velocity
Super-sonic velocity
Lower critical velocity

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Hydraulics and Fluid Mechanics in ME
The stress-strain relation of the newtoneon fluid is

linear
hyperbolic
parabolic
inverse type

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Hydraulics and Fluid Mechanics in ME
The velocity at which the flow changes from laminar flow to turbulent flow is called

Super-sonic velocity
Critical velocity
Velocity of approach
Sub-sonic velocity

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Hydraulics and Fluid Mechanics in ME
Cavitation is caused by

weak material
high velocity
low pressure
high pressure

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Hydraulics and Fluid Mechanics in ME
A balloon lifting in air follows the following principle

principle of buoyancy
law of gravitation
All of these
Archimedes principle

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Hydraulics and Fluid Mechanics in ME
A hydraulic press has a ram of 15 cm diameter and plunger of 1.5 cm. It is required to lift a weight of 1 tonne. The force required on plunger is equal to

1000 kg
10 kg
1 kg
100 kg

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