Fluid Mechanics for Chemical

Prandtl mixing length is___________________?

Byadmin March 9, 2019August 26, 2021

Prandtl mixing length is___________________?

A. Applicable to laminar flow problems
B. A universal constant
C. Zero at the pipe wall
D. None of these

Fluid Mechanics for Chemical

In case of supersonic flow of a fluid through pipeline, the ‘Mach number’ is__________________?

In case of supersonic flow of a fluid through pipeline, the ‘Mach number’ is__________________?

A. 0
B. 1
C. < 1
D. > 1

Read More In case of supersonic flow of a fluid through pipeline, the ‘Mach number’ is__________________?
Fluid Mechanics for Chemical

For laminar flow of Newtonian fluid in a circular pipe, the velocity distribution is a function of the distance ‘d’ measured from the centre line of the pipe, and it follows a ______________ relationship?

For laminar flow of Newtonian fluid in a circular pipe, the velocity distribution is a function of the distance ‘d’ measured from the centre line of the pipe, and it follows a ______________ relationship?

A. Logarithmic
B. Parabolic
C. Hyperbolic
D. Linear

Read More For laminar flow of Newtonian fluid in a circular pipe, the velocity distribution is a function of the distance ‘d’ measured from the centre line of the pipe, and it follows a ______________ relationship?
Fluid Mechanics for Chemical

The ____________ is measured by a piezometric opening?

The ____________ is measured by a piezometric opening?

A. Dynamic pressure
B. Static pressure
C. Total pressure
D. Point velocity

Read More The ____________ is measured by a piezometric opening?
Fluid Mechanics for Chemical

Steady fluid flow occurs, when the derivative of flow variables satisfy the following condition.

Steady fluid flow occurs, when the derivative of flow variables satisfy the following condition.

A. ∂/∂s = 0
B. ∂/∂t = 0
C. ∂/∂s = constant
D. ∂/∂t = constant

Read More Steady fluid flow occurs, when the derivative of flow variables satisfy the following condition.
Fluid Mechanics for Chemical

What is the ratio of total kinetic energy of fluid passing per second to the value obtained on the basis of average velocity (for laminar flow through a circular pipe) ?

What is the ratio of total kinetic energy of fluid passing per second to the value obtained on the basis of average velocity (for laminar flow through a circular pipe) ?

A. 0.5
B. 1
C. 1.5
D. 2

Read More What is the ratio of total kinetic energy of fluid passing per second to the value obtained on the basis of average velocity (for laminar flow through a circular pipe) ?
Fluid Mechanics for Chemical

The time taken for gravity flow of a fixed volume of liquid (as in Redwood viscometer) is directly proportional to its __________________?

The time taken for gravity flow of a fixed volume of liquid (as in Redwood viscometer) is directly proportional to its __________________?

A. Absolute viscosity
B. Ratio of absolute viscosity to density
C. Density
D. Reynolds number

Read More The time taken for gravity flow of a fixed volume of liquid (as in Redwood viscometer) is directly proportional to its __________________?

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