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Fluid Mechanics

Fluid Mechanics
Unit of mass velocity is

Kg/m²
Kg/m³. hr
Kg/hr
Kg/m². hr

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

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

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Fluid Mechanics
Velocity of liquid hydrocarbon fuels in a pipeline can not be measured by magnetic flowmeters, because their __________ is very low/small.

Electrical resistivity
Specific gravity
Thermal conductivity
Electrical conductivity

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Fluid Mechanics
Pressure drop (Δp) for a fluid flowing in turbulent flow through a pipe is a function of velocity (V) as

V-0.2
V2
V1.8
V2.7

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Fluid Mechanics
For laminar flow through a closed conduit

Vmax = Vav
Vmax = 2Vav
Vmax = 0.5Vav
Vmax = 1.5Vav

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Fluid Mechanics
Steady fluid flow occurs, when the derivative of flow variables satisfy the following condition.

∂/∂t = 0
∂/∂t = constant
∂/∂s = constant
∂/∂s = 0

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