H3/2
H1/2
H5/2
H2/3
✅ The correct answer is option C.
Chemical Engineering MCQs
Fluid flow through a packed bed is represented by the __________ equation.
Fanning’s
Ergun’s
Hagen-Poiseuille’s
None of these
✅ The correct answer is option B.
A spherical particle is falling slow in a viscous liquid such that Reynolds number is less than 1. Which statement is correct for this situation?
Inertial and drag forces are important
Drag, gravitational and buoyancy forces are impportant
Drag force and gravitational forces are important
None of the above
✅ The correct answer is option B.
Remote control valve is a __________ valve.
Gate
Butterfly
Needle
Globe
✅ The correct answer is option B.
Which of the following equations applies to the fluid flow through a packed bed for very large Reynolds number?
Fanning equation
Blake-Pllummer equation
Hagen-Poiseulle equation
Kozney-Karman equation
✅ The correct answer is option B.
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)?
0.5
1
1.5
2
✅ The correct answer is option D.
Location of vena-contracta in an orificemeter does not depend upon the
Type of orifice
Density, viscosity & compressibility of the fluid
Ratio of pipe diameter to orifice diameter
Pipe roughness
✅ The correct answer is option A.
The boundary layer thickness at a given section along a flat plate __________ with increasing Reynold’s number.
Increases
Decreases
Remains same
May increase or decrease
✅ The correct answer is option B.
One poise (unit of absolute/dynamic viscosity) is equivalent to one
Gm/cm². sec
Gm/cm. sec
Cm²/sec
M²/sec
✅ The correct answer is option B.
Centrifugal compressors compared to reciprocating compressors
Require less space
Have quieter operation
Have lower operating costs
All of the above
✅ The correct answer is option D.