Drag co-efficient for motion of spherical particles in a stationary fluid in the stoke's law range is

The ratio of the wall drag to the form drag in the Stoke's law range (for motion of spherical particles in a stationary fluid) is

A

0.5

B

1

C

2

D

0.33

In Newton's law range, the drag co-efficient for the motion of spherical particle in a stationary fluid is

A

0.44

B

0.044

C

4.4

D

44

For motion of spherical particles in a stationary fluid, the drag co-efficient in hindered settling compared to that in free settling is

A

More

B

Less

C

Equal

D

More or less, depending on the type of particle

In the Newton's law range, the terminal velocity of a solid spherical particle falling through a stationary fluid mass is __________ the fluid viscosity.

A

Directly proportional to

B

Inversely proportional to

C

Inversely proportional to the square root of

D

Independent of

In Newton's law range, the terminal velocity of a solid spherical particle falling through a stationary fluid mass varies as the __________ of its diameter.

A

Inverse

B

Square root

C

Second power

D

First power

The terminal velocity of a solid spherical particle falling through a stationary fluid mass in the Stoke's law range is proportional to the

A

Inverse of fluid viscosity

B

Square of particle size

C

Difference in the densities of the particle & fluid

D

All of the above

The ratio of wall drag to total drag in the Stoke's law range is

A

0.5

B

1

C

$$\frac{1}{3}$$

D

$$\frac{2}{3}$$

The fluid forces considered in the Navier Stokes equation are

A

gravity, pressure and viscous

B

gravity, pressure and turbulent

C

pressure, viscous and turbulent

D

gravity, viscous and turbulent

Navier-Stokes equation is useful in the analysis of __________ fluid flow problems.

A

Non-viscous

B

Viscous

C

Turbulent

D

Rotational

In a stationary fluid, how does the local pressure of the fluid vary?

A

With depth

B

In the horizontal direction only

C

Both with depth and along horizontal direction

D

Neither with depth nor along horizontal direction

Drag co-efficient for motion of spherical particles in a stationary fluid in the stoke's law range is

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