Heat Transfer Operations Mock Test 1

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Question 1 of 10

1. What is the name of the following setup?

Double split flow

Split flow

Cross flow

Divided flow

Question 1 of 10

Question 2 of 10

2. Recognize the given Shell and Tube Heat Exchanger.

3-6 Shell and Tube

2-3 Shell and Tube

2-4 Shell and Tube

1-2 Shell and Tube

Question 2 of 10

Question 3 of 10

3. What is the meaning of ¹⁄₂" OD, 5 BWG?

Wall Thickness of = 0.220" and Inner Diameter = 0.060"

Wall Thickness of = 0.203" and Inner Diameter = 0.094"

Wall Thickness of = 0.022" and Inner Diameter = 0.478"

Wall Thickness of = 0.025" and Inner Diameter = 0.450"

Question 3 of 10

Question 4 of 10

4. Which of the following statements are correct about the below heat exchanger?
NOTE: Cold fluid in tube and Hot fluid in the shell.

The temperature of the fluid in the tube reaches a maximum and then decreases

The temperature of the fluid in the tube constantly increases

The temperature of the fluid in the tube monotonically decreases

The temperature of the fluid in the tube reaches a maximum and then becomes constant

Question 4 of 10

Question 5 of 10

5. Consider we have a 1-2 Shell and Tube Heat Exchanger with tube diameter 20mm and shell diameter 55mm, we have two fluids A&B, A is supply water and B is distilled water, we desire to have their flow rates as 15m³/s and 21m³/s respectively. Which fluid pass arrangement would be best suited for the HE?

Counterflow with A in tube and B in the shell side

Counterflow with B in tube and A in the shell side

Parallel flow with B in tube and A in the shell side

Parallel flow with A in tube and B in the shell side

Question 5 of 10

Question 6 of 10

6. Velocity profile in a pipe is independent of axial position whereas Temperature Profile is not.

True

False

Question 6 of 10

Question 7 of 10

7. Which one of the following is the correct representation of Temperature profile for Double pipe heat exchanger?

heat-transfer-operations-questions-answers-double-pipe-heat-exchangers-q11b

heat-transfer-operations-questions-answers-double-pipe-heat-exchangers-q11a

heat-transfer-operations-questions-answers-double-pipe-heat-exchangers-q11c

heat-transfer-operations-questions-answers-double-pipe-heat-exchangers-q11d

Question 7 of 10

Question 8 of 10

8. For the calculation of Overall Heat transfer coefficient for fouling factor R, which one of the following expression do we use?

(h_i + h_o + R)^-1

(h_i^-1+h_o^-1 + R^-1)

(h_i^-1+h_o^-1 + R^-1)^-1

(h_i^-1+h_o^-1 + R)^-1

Question 8 of 10

Question 9 of 10

9. Which of the following is not a property of Platular Heat Exchanger?

It can handle four liquids at a time

It is welded from all the sides and hence a type of welded plate-type heat exchanger

The absence of gaskets ensures no leakage and allows the use of toxic fluids

It has high maintenance and cleaning expenses

Question 9 of 10

Question 10 of 10

10. When a fluid is used in a Shell and Tube heat exchanger, which one of the following is not true?

Extended fins are used on the shell side to increase the Heat Transfer coefficient

Baffles are provided only to work as fins

If the fluid is gas then the gas side heat transfer coefficient is the lowest

Fins increase necessary heat transfer area

Question 10 of 10