Rotational
Unsteady
Turbulent
Non-uniform
✅ The correct answer is option D.
Chemical Engineering MCQs
When the head pumped against is less than the head of the fluid used for pumping, the usual device is a/an
Ejector
Blower
Injector
Airlift
✅ The correct answer is option D.
Which of the following pipe bends will incur the largest head loss ?
U-bend
30° bend
45° bend
90° bend
✅ The correct answer is option A.
Which of the following is a dimensionless parameter?
Angular velocity
Specific weight
Kinematic viscosity
None of these
✅ The correct answer is option D.
The variable required to be known in correlations used for estimating the horse power of a centrifugal gas compressor and hence its cost are P. Inlet pressure Q. Compressor rpm R. Delivery pressure S. Volumetric flow rate at inlet.
P, Q and R
P and R
R and S
P, Rand S
✅ The correct answer is option A.
Forces acting on a particle settling in fluid are __________ forces.
Gravitational & buoyant
Centrifugal & drag
Gravitational or centrifugal buoyant drag
External, drag & viscous
✅ The correct answer is option C.
In a dry packed bed, the pressure drop will be changed by increasing the flow rate as
V1.8
V-0.8
V
V-1
✅ The correct answer is option A.
Mercury is an ideal barometric fluid mainly due to its
High density
Low compressibility
Low capillary action
Very low vapor pressure
✅ The correct answer is option D.
Schedule number of a pipe, which is a measure of its wall thickness, is given by
1000 P’/S
100 P’/S
1000 S/P’
10000 P’/S
✅ The correct answer is option A.
The terminal velocity of a solid spherical particle falling through a stationary fluid mass in the Stoke’s law range is proportional to the
Inverse of fluid viscosity
Square of particle size
Difference in the densities of the particle & fluid
All of the above
✅ The correct answer is option D.