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Fluid Mechanics

Fluid Mechanics
The ratio of inertial forces to gravity forces is called the __________ number.

Euler
Mach
Weber
Froude

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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.

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

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Fluid Mechanics
The normal stress is the same in all directions at a point in a fluid, when the fluid is

Both A and B
Incompressible
Non-viscous
Having no motion of one fluid layer relative to the other

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Fluid Mechanics
The energy loss in flow through ven-turimeter is less than that through flow nozzle, because in case of a flow nozzle, the

Length is shorter
Throat diameter is more
Distance between the throat and the inlet is more
Sudden expansion of flow in the downstream occurs

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Fluid Mechanics
The __________ pressure is measured by a static tube.

Static
None of these
Dynamic
Total

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Fluid Mechanics
In frictional fluid flow, the quantity, P/ρ + V²/2gc + gz/gc, is

Constant along a streamline
None of these
Increased in the direction of flow
Not constant along a streamline

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