39.6y
48y
49.2y
58y
✅ The correct answer is option B.
Chemical Engineering MCQs
In laminar flow through a round tube, the discharge varies
Linearly as the viscosity
Inversely as the pressure drop
Inversely as the viscosity
As the square of the radius
✅ The correct answer is option C.
In the Newton’s law range, the terminal velocity of a solid spherical particle falling through a stationary fluid mass is __________ the fluid viscosity.
Directly proportional to
Inversely proportional to
Inversely proportional to the square root of
Independent of
✅ The correct answer is option B.
A pipe of I.D. 4 m is bifurcated into two pipes of I.D. 2 m each. If the average velocity of water flowing through the main pipe is 5 m/sec, the average velocity through the bifurcated pipes is
20 m/sec
10 m/sec
5√2 m/sec
5 m/sec
✅ The correct answer is option B.
With a constant diameter impeller of a centrifugal pump
Its capacity varies directly as the square of speed
Head varies as the square of speed
Horsepower input varies as the square of speed
Head varies as the speed
✅ The correct answer is option B.
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.
Inverse
Square root
Second power
First power
✅ The correct answer is option B.
The equivalent diameter for fluid flow through square cross section channel of side ‘x’, for pressure drop calculation purpose is given by
4x
2x
x
√x
✅ The correct answer is option C.
In isotropic turbulence, the __________ are equal to each other.
Temporal velocity components
Mean square of velocity fluctuations in the three co-ordinate directions
Root mean square of velocity fluctuations in the three co-ordinate directions
None of these
✅ The correct answer is option B.
Assuming flow to be laminar, if the diameter of the pipe is halved, then the pressure drop will
Increase
Decrease
Remain same
Be quadrupled
✅ The correct answer is option A.
Air vessel of a reciprocating pump is initially filled with
Atmospheric air
Compressed air
Water
None of these
✅ The correct answer is option B.