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Fluid Mechanics

Fluid Mechanics
Rubber latex is an example of a __________ .fluid.

Pseudoplastic
Dilatent
Bingham plastic
Newtonion

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Fluid Mechanics
With increase in molecular weight of the gas, the head developed by a centrifugal compressor will

Increase
Decrease
Unpredictable
Remain same

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Fluid Mechanics
Pressure drag does not depend upon the

Pressure of main flow only
All of these
Length of the body in flow direction
Roughness of surface of the body

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Fluid Mechanics
What is the force required (in Newtons) to hold a spherical balloon stationary in water at a depth of H from the air-water iterface? The balloon is of radius 0.1 m and is filled with air.

4πg/3
0.04πgH/3
0.01πgH/4
0.01πgH/8

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Fluid Mechanics
Which of the following must be followed by the flow of a fluid (real or ideal)? (I) Newton's law of viscosity. (II) Newton's second law of motion. (III) The continuity equation. (IV) Velocity of boundary layer must be zero relative to boundary. (V) Fluid cannot penetrate a boundary.

II, III, V
I, II, V
II, IV, V
I, II, III

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Fluid Mechanics
Capillary rise of mercury in a small diameter tube is proportional to (where, d = diameter of the tube, σ = surface tension of mercury)

1/d
D
Σ
L/σ

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