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Fluid Mechanics

Fluid Mechanics
Toothpaste is a

Dilatent
Newtonion liquid
Pseudoplastic
Bingham plastic

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Fluid Mechanics
The pressure drop per unit length of pipe incurred by a fluid 'X' flowing through pipe is Δp. If another fluid 'Y' having both the specific gravity & density just double of that of fluid 'X', flows through the same pipe at the same flow rate/average velocity, then the pressure drop in this case will be

Δp
Δp/2
Δp²
2Δp

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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
Having no motion of one fluid layer relative to the other
Non-viscous

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Fluid Mechanics
Pressure drag does not depend upon the

All of these
Pressure of main flow only
Roughness of surface of the body
Length of the body in flow direction

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Fluid Mechanics
Applying a pressure drop across a capillary results in a volumetric flow rate 'Q' under laminar flow conditions. The flow rate for the same pressure drop, in a capillary of the same length but half the radius is

Q/8
Q/4
Q/16
Q/2

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Fluid Mechanics
Unit of mass velocity is

Kg/m²
Kg/m³. hr
Kg/m². hr
Kg/hr

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