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Fluid Mechanics

Fluid Mechanics
Permanent pressure loss in a well designed venturimeter is about __________ percent of the venturi differential.

30
1
10
50

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Fluid Mechanics
The temperature in isentropic flow

None of these
Does not depend on Mach number
Cannot drop and then increase again downstream
Depends on Mach number only

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Fluid Mechanics
Boundary layer thickness in laminar flow over a flat plate increases as(where, d = distance from the leading edge.)

d2/3
d2
d1/3
√d

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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

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

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

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Fluid Mechanics
Bernoull's equation does not apply to the functioning of a/an

Venturimeter
Orificem
Pitot tube
None of these

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