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Fluid Mechanics

Fluid Mechanics
Lower BWG means __________ of the tube.

Outer diameter
Inner diameter
Lower cross-section
Lower thickness

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Fluid Mechanics
The length of the tube necessary for the boundary layer to reach the centre of the tube and for fully developed flow to be established is called the __________ length.

Prandtl mixing
Transition
None of these
Equivalent

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Fluid Mechanics
The terminal velocity of a small sphere settling in a viscous fluid varies as the

Inverse of the fluid viscosity
First power of its dimeter
Square of the difference in specific weights of solid & fluid
Inverse square of the diameter

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Fluid Mechanics
Toothpaste is a

Dilatent
Newtonion liquid
Pseudoplastic
Bingham plastic

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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/2
Q/4
Q/16

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Fluid Mechanics
High specific speed of a pump implies that, it is a/an __________ pump.

None of these
Centrifugal
Mixed flow
Axial flow

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