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.

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, V

II, III, V

I, II, III

II, IV, V

I, II, V

II, III, V

I, II, III

II, IV, V

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Fluid Mechanics
A centrifugal pump is used to pump water through a horizontal distance of 150 m, and then raised to an overhead tank 10 m above. The pipe is smooth with an I.D of 50 mm. What head (m of water) must the pump generate at its exit (E) to deliver water at a flow rate of 0.001 m³/s? The Fanning friction factor, f is 0.0062.

10 m

20 m

11 m

12 m

10 m

20 m

11 m

12 m

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Fluid Mechanics
A lubricant 100 times more viscous than water would have a viscosity (in Pa.s)

0.1

1

0.01

10

0.1

1

0.01

10

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Fluid Mechanics
What is the force required (in Newtons) to hold a spherical balloon stationary in water at a depth of H from the air-water iterface? The balloon is of radius 0.1 m and is filled with air.

4πg/3

0.01πgH/8

0.04πgH/3

0.01πgH/4

4πg/3

0.01πgH/8

0.04πgH/3

0.01πgH/4

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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

5.5

1

20090

20363

5.5

1

20090

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

Reynolds

Euler

Mach

Weber

Reynolds

Euler

Mach

Weber

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Fluid Mechanics

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.

Fluid Mechanics A lubricant 100 times more viscous than water would have a viscosity (in Pa.s)

Fluid Mechanics What is the force required (in Newtons) to hold a spherical balloon stationary in water at a depth of H from the air-water iterface? The balloon is of radius 0.1 m and is filled with air.

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.

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

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.

Fluid Mechanics
A lubricant 100 times more viscous than water would have a viscosity (in Pa.s)

Fluid Mechanics
What is the force required (in Newtons) to hold a spherical balloon stationary in water at a depth of H from the air-water iterface? The balloon is of radius 0.1 m and is filled with air.

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.

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