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.

II, III, V

I, II, V

I, II, III

II, IV, V

II, III, V

I, II, V

I, II, III

II, IV, V

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Fluid Mechanics
The Prandtl mixing length is

Useful for computing laminar flow problems

Independent of radial distance from the pipe axis

Zero at the pipe wall and is a universal constant

Independent of the shear stress

Useful for computing laminar flow problems

Independent of radial distance from the pipe axis

Zero at the pipe wall and is a universal constant

Independent of the shear stress

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Fluid Mechanics
Reynolds number for flow of water at room temperature through 2 cm dia pipe at an average velocity of 5 cm/sec is around

10

100

1000

2000

10

100

1000

2000

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Fluid Mechanics
Bernoull's equation does not apply to the functioning of a/an

Pitot tube

None of these

Venturimeter

Orificem

Pitot tube

None of these

Venturimeter

Orificem

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

0.01

1

10

0.1

0.01

1

10

0.1

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Fluid Mechanics
With the increase in depth, the hydrostatic pressure in an unaccelerated incompressible fluid (in a constant gravitational field)

Remains constant

Increases exponentially

Increases linearly

Decreases

Remains constant

Increases exponentially

Increases linearly

Decreases

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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 The Prandtl mixing length is

Fluid Mechanics Reynolds number for flow of water at room temperature through 2 cm dia pipe at an average velocity of 5 cm/sec is around

Fluid Mechanics Bernoull's equation does not apply to the functioning of a/an

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

Fluid Mechanics With the increase in depth, the hydrostatic pressure in an unaccelerated incompressible fluid (in a constant gravitational field)

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
The Prandtl mixing length is

Fluid Mechanics
Reynolds number for flow of water at room temperature through 2 cm dia pipe at an average velocity of 5 cm/sec is around

Fluid Mechanics
Bernoull's equation does not apply to the functioning of a/an

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

Fluid Mechanics
With the increase in depth, the hydrostatic pressure in an unaccelerated incompressible fluid (in a constant gravitational field)