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FLUID MECHANICS

Fluid Mechanics
What causes cavitation in centrifugal pump?

Low suction pressure
High suction pressure
Low barometric pressure
High suction velocity

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Fluid Mechanics
For a stable equilibrium of a submerged body (where, G and B are centres of gravity & buoyancy respectively).

B is above G
B & G coincide
G is above B
None of these

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Fluid Mechanics
The variable required to be known in correlations used for estimating the horse power of a centrifugal gas compressor and hence its cost are P. Inlet pressure Q. Compressor rpm R. Delivery pressure S. Volumetric flow rate at inlet.

P, Q and R
R and S
P and R
P, Rand S

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Fluid Mechanics
Momentum transfer in laminar flow of fluids results due to the

Density
Viscosity
None of these
Velocity gradient

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Fluid Mechanics
The terminal velocity of a solid spherical particle falling through a stationary fluid mass in the Stoke's law range is proportional to the

Difference in the densities of the particle & fluid
Square of particle size
All of these
Inverse of fluid viscosity

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