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

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

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Fluid Mechanics
Select the wrong statement pertaining to flow of an incompressible fluid through a venturimeter.

Venturimeter incurs less power loss compared to an equivalent orificemeter
For frictionless flow, the fluid pressure entering the venturi meter will be exactly equal to that leaving the venturimeter
Venturimeter occupies less space than an orificemeter
Discharge of fluid through a venturimeter depends upon the gage difference irrespective of the orientation of venturimeter

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Fluid Mechanics
A differential pressure cell is used for

Measuring the difference of the impact & the static pressure
Measuring small pressure difference in gases
Remote recording of pressure difference
Measuring small pressure difference in liquids

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