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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
A flow is called sub-sonic, if the Mach number is

Less than unity
Between 1 and 6
Unity
More than 6

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Hydraulics and Fluid Mechanics in ME
If a body floating in a liquid occupies a new position and remains at rest in this new position, when given a small angular displacement, the body is said to be in __________ equilibrium.

None of these
Stable
Unstable
Neutral

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Hydraulics and Fluid Mechanics in ME
The coefficient of viscosity may be determined by

Orifice type viscometer
All of these
Rotating cylinder method
Capillary tube method

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Hydraulics and Fluid Mechanics in ME
The speed of sound in a ideal gas varies directly as its

temperature
density
absolute temperature
modulus of elasticity

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Hydraulics and Fluid Mechanics in ME
A fluid which obeys the Newton's law of viscosity is termed as

Newtonian fluid
Real fluid
Non-Newtonian fluid
Ideal fluid

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Hydraulics and Fluid Mechanics in ME
According to fan laws, for fans having constant wheel diameter, the air or gas capacity varies

Directly as fan speed
Square of fan speed
Square root of fan speed
Cube of fan speed

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