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Fluid Mechanics

Fluid Mechanics
The ratio of pressure forces to inertial forces is called the __________ number.

Reynold
Euler
Mach
Froude

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Fluid Mechanics
The ratio of inertial forces to elastic forces is called the __________ number.

Reynolds
Mach
Euler
Weber

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Fluid Mechanics
Potential flow is the flow of

Compressible fluids with no shear
Incompressible fluids with no shear
Incompressible fluids with shear
Compressible fluids with shear

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Fluid Mechanics
Which of the following must be followed by the flow of a fluid (real or ideal)? (I) Newton's law of viscosity. (II) Newton's second law of motion. (III) The continuity equation. (IV) Velocity of boundary layer must be zero relative to boundary. (V) Fluid cannot penetrate a boundary.

I, II, III
I, II, V
II, III, V
II, IV, V

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

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

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Fluid Mechanics
A fluid is pumped at the rate of 10 lb/sec to a height of 55 ft. The horse power required is __________ hp.

20363
1
5.5
20090

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