Less power than
More power than
Same power as
Data insufficient to predict
✅ The correct answer is option A.
Chemical Engineering MCQs
Check valve provided in the discharge line of a centrifugal pump serves the purpose of controlling the
Back flow of fluid in the event of stoppage of pump
Discharge pressure
Flow of liquid during operation of the pump
All of the above
✅ The correct answer is option A.
The continuity equation
Relates mass flow rate along a stream tube
Relates work and energy
Stipulates that Newton’s second law of motion must be satisfied at every point in the fluid
None of these
✅ The correct answer is option A.
Net positive suction head (NPSH) of a centrifugal pump must be
Greater than the vapour pressure of the liquid
Less than the vapour pressure of the liquid
Equal to the vapour pressure of the liquid
Less than barometric pressure
✅ The correct answer is option A.
In deriving Bernoulli’s equation, fluid is assumed to be
Incompressible, frictionless, steady, along a streamline
Uniform, steady, incompressible, along a streamline
Steady, density being pressure dependent, frictionless
None of these
✅ The correct answer is option A.
A hydraulic press has a ram of 10 cms in diameter and a plunger of 1 cm in diameter. The force required on the plunger to raise a weight of 10 tons on the ram is __________ kg.
10
100
1000
10000
✅ The correct answer is option B.
Choose the correct set of dimensions of viscosity that are equivalent (where, F, M, L, T are dimensions for force, mass, length and time respectively).
FL⁻²T, ML⁻¹T⁻¹
FLT, ML⁻¹T⁻¹
ML⁻¹T⁻³, F⁻¹L²T
F-1L²T⁻¹, MLT⁻³
✅ The correct answer is option A.
The head loss in turbulent flow in a pipe varies
Directly as the velocity
Inversely as the square of the velocity
Approximately as the square of the velocity
Inversely as the square of the diameter
✅ The correct answer is option C.
Draining of shallow pits or sump is done by a sump pump, which is a __________ pump.
Single stage vertical
Centrifugal
Plunger
Diffuser
✅ The correct answer is option A.
Power required for mixing Newtonion fluids is a function of the
Speed of impeller, diameter of impeller & viscosity
Density & viscosity of fluid only
Density of fluid, viscosity of fluid & impeller dia only
None of these
✅ The correct answer is option D.