Quiz Lesson 2

Quiz Lesson 2

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Question 1 of 12

1. Question
What is the purpose of baffles in a shell and tube heat exchanger?
- To support the tubes
- To regulate the temperature of the fluids
- To increase the surface area for heat transfer
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Question 2 of 12

2. Question
Which material is commonly used for constructing the tubes of a shell and tube heat exchanger?
- Steel
- Copper
- Aluminum brass
- Zinc
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Question 3 of 12

3. Question
How are the metal plates in a plate-type heat exchanger sealed from each other?
- By using rubber joints
- By using adhesive
- By using bolts
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Question 4 of 12

4. Question
What should be measured before opening a plate-type heat exchanger for maintenance and inspection?
- The flow rate of the fluids
- The pressure rating of the unit
- The length of the tie bolts
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Question 5 of 12

5. Question
What are straight fins in a plate and fin-type heat exchanger?
- Fins fixed in a curvature form
- Fins fixed in a zig-zag form
- Fins fixed perpendicular to the direction of flow
- Fins fixed parallel to the direction of flow
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Question 6 of 12

6. Question
How do fins increase the efficiency of a plate and fin-type heat exchanger?
- By increasing the surface area available for heat transfer
- By increasing the turbulence of the fluid flow
- By decreasing the surface area available for heat transfer
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Question 7 of 12

7. Question
What is the purpose of continuous scraping of the surface in this heat exchanger?
- To increase the fouling of the system
- To decrease the heat transfer efficiency
- To achieve long running time
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Question 8 of 12

8. Question
What operates the blade unit in this heat exchanger?
- A timer
- A thermostat
- A pressure sensor
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Question 9 of 12

9. Question
What are some disadvantages of using a phase change heat exchanger?
- Limited application
- Higher maintenance costs
- Difficult installation process
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Question 10 of 12

10. Question
How are direct contact type heat exchangers classified?
- By the type of fluids involved in heat transfer
- By the type of medium used for heat transfer
- By the type of heat transfer surface
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Question 11 of 12

11. Question
What is the working principle of a spiral heat exchanger based on?
- The co-current flow principle
- The counter-current flow principle
- The parallel flow principle
- The cross-flow principle
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Question 12 of 12

12. Question
What type of flow does the spiral design of the heat exchanger channels create?
- Laminar flow
- Steady flow
- Turbulent flow
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