Chemical Engineering - Process Equipment and Plant Design

16. 

The value of fouling factor depends upon the

A. characteristic of process fluid.
B. velocity of process fluid containing suspended solids.
C. suspended solids in the fluid.
D. all (a), (b) and (c).

Answer: Option D

Explanation:

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17. 

In case of bubble cap distillation column of diameter greater than 1.2 metres, the cap diameter is roughly about __________ cms.

A. 10
B. 20
C. 30
D. 35

Answer: Option A

Explanation:

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18. 

Tube side pressure drop in a 1-2 heat exchanger (for turbulent flow of fluids through the tubes) is about __________ times, that in a 1-1 heat exchanger having the same size & number of tubes and operated at the same liquid flow rate.

A. 2
B. 1/2
C. 4
D. 8

Answer: Option D

Explanation:

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19. 

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

A. (1.2)3/2
B. (1.2)3/5
C. (1.2)2/3
D. (1.2)5/3

Answer: Option D

Explanation:

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20. 

In a heat exchanger, shell side fluid velocity can be changed by changing the tube

A. layout
B. pitch
C. both (a) & (b)
D. neither (a) nor (b)

Answer: Option C

Explanation:

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