Chemical Engineering - Heat Transfer

26. 

In SI units, fouling factor is expressed in

A. m2°K/W
B. W/m2°K
C. m2°K
D. m°K/W

Answer: Option A

Explanation:

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27. 

An ejector is used to

A. increase pressure
B. increase temperature
C. remove condensate
D. none of these

Answer: Option D

Explanation:

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28. 

Extremely large or small volumes of fluids are generally best routed through the shell side of a shell and tube heat exchanger, because of the

A. less corrosion problems.
B. flexibility possible in the baffle arrangement.
C. low pressure drop.
D. high heat transfer co-efficient.

Answer: Option B

Explanation:

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29. 

All analogy equations connecting friction factor and heat transfer co-efficient apply only to

A. wall or skin friction
B. form friction
C. both (a) and (b)
D. turbulent flow

Answer: Option A

Explanation:

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30. 

Electro-magnetic spectrum range, which is important for radiation varies from __________ microns.

A. 1 to 100
B. 0.5 to 50
C. 10 to 100
D. 100 to 1000

Answer: Option B

Explanation:

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