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Fluid Mechanics

Fluid Mechanics
Dimension of kinematic viscosity is

MLT⁻¹
L² . T⁻²
L²T
L² . T⁻¹

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Fluid Mechanics
Transition from laminar flow to turbulent flow is aided by the

All of these
Pressure gradient and the compressibility of the flowing medium
Vibration
Surface roughness and curvature (i.e.sharp corners)

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Fluid Mechanics
For turbulent fluid flow in pipe, the expression for Prandtl one seventh power law is (where, r = pipe radius, x = distance).

V/Vmax = (r/x)1/7
V/Vmax = (x/r)1/7
None of these
V/Vmax = (x.r)1/7

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Fluid Mechanics
Pressure gradient in the pipe flow is influenced by the

Density & viscosity of the fluid
Velocity of the fluid
All of these
Diameter of pipe

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Fluid Mechanics
The unit of bulk modulus of elasticity for a liquid in S.I. unit is

N/m²
N/m
N
N/m³

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Fluid Mechanics
Multistage compressors are used in industry, because they

Are easy to control
Resemble closely to isothermal compression
Reduce the cost of compressor
Reduce the size requirement

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