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Fluid Mechanics

Fluid Mechanics
__________ pump is the most suitable device for discharging a liquid against a pressure of ≥ 1500 kgf/cm².

Plunger
Piston
Vane
Centrifugal

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Fluid Mechanics
Low specific speed of a pump implies that, it is a/an __________ pump.

None of these
Axial flow
Centrifugal
Mixed flow

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Fluid Mechanics
Interstage coolers are provided in a multistage compressor to

None of these
Save power in compressing a given volume to a given pressure
Achieve the exact delivery pressure
Cool the delivered air

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Fluid Mechanics
In an incompressible flow of fluid, the fluid

Temperature remains constant
Is frictionless
Density does not change with pressure & temperature
Compressibility is greater than zero

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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)

D
Σ
L/σ
1/d

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Fluid Mechanics
In Newton's law range, the drag co-efficient for the motion of spherical particle in a stationary fluid is

0.044
4.4
44
0.44

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