bulk modulus
shear modulus
modulus of rigidity
modulus of elasticity
✅ The correct answer is option B.
Process Equipment and Plant Design MCQs
Speed of industrial paddle agitator ranges from __________ rpm.
1 to 5
20 to 100
500 to 750
1000 to 2000
✅ The correct answer is option B.
Pick out the wrong statement about the design of seive plate column and the bubble cap column.
The downcomer design and the residence time in the downcomer is almost same for seive plate and bubble cap columns.
Weir length for a bubble cap plate is the same as that for the seive plate.
Weir height for a bubble cap plate column is the same as that for a seive plate column.
Weir height in case of a bubble cap plate ranges from 50 to 150 mm and is higher than the seive plate.
✅ The correct answer is option C.
Normally, the ratio of the total riser area to the tower cross sectional area (for bubble cap towers of diameter more than 3 ft) is around
0.4-0.6
0.35-0.75
0.1-0.2
0.55-0.85
✅ The correct answer is option C.
The difficulty of liquid distribution in packed towers is accentuated, when the ratio of tower diameter to packing diameter is
< 30
< 7
> 7 < 15
> 20 < 50
✅ The correct answer is option B.
To keep the power input constant for a stirred vessel operating under fully developed turbulent flow conditions (constant power number), if the impeller diameter is increased by 20%, the impeller speed should be decreased by a factor of
(1.2)3/2
(1.2)3/5
(1.2)2/3
(1.2)5/3
✅ The correct answer is option D.
Compensation against openings in process vessels for giving inlet and outlet connections, for providing sight glasses and manholes etc. is provided for strength and rigidity. The most efficient type of compensation is of __________ type.
nozzle or rim
flared out
fluid in
ring plate
✅ The correct answer is option A.
Normally, the length to diameter ratio of rotary dryers varies form 4 to 10 and for its economic operation, the number of transfer units (NTU) for such dryers varies from
1.5-2.5
3.5-5.5
7.5-10.0
Oct-15
✅ The correct answer is option A.
Rotary driers are most economically designed for the number of heat transfer units (HTU) from
0.01 to 1
1.5 to 2.5
5 to 10
10 to 20
✅ The correct answer is option B.
Length to diameter ratio of most rotary driers is in the range of
1 to 2
4 to 10
10 to 20
20 to 30
✅ The correct answer is option B.