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Fluid Mechanics

Fluid Mechanics
Rotary vacuum pumps can reduce the absolute pressure to as low as __________ mm Hg.

0.1
0.001
0.01
1

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Fluid Mechanics
The capacity of an accumulator is the maximum

Discharge which it can deliver
None of these
Liquid which it can store
Energy which it can store

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Fluid Mechanics
A fluid which has a linear relationship between the magnitude of applied shear-stress and the resulting rate of deformation is called a/an __________ fluid.

Ideal
Non-Newtonion
Newtonion
Incompressible

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Fluid Mechanics
In case of supersonic flow of a fluid through pipeline, the 'Mach number' is

> 1
1
< 1

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Fluid Mechanics
The length of the tube necessary for the boundary layer to reach the centre of the tube and for fully developed flow to be established is called the __________ length.

Prandtl mixing
None of these
Transition
Equivalent

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Fluid Mechanics
The equivalent diameter for pressure drop calculation for a duct of square cross-section is given by(where, x = each side of the square duct)

πx
2x
x/2
x

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