MCQOPTIONS
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MCQOPTIONS
This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Heat Transfer knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Recognize the following evaporator. |
| A. | Falling Film Evaporator |
| B. | Short-tube Vertical Evaporator |
| C. | Climbing Film Evaporator |
| D. | Basket-type Evaporator |
| Answer» D. Basket-type Evaporator | |
| 2. |
Which one of the following is not a subset of Nucleate boiling evaporators? |
| A. | Climbing Film Evaporator |
| B. | Rising Film Evaporator |
| C. | Short-tube Vertical Evaporator |
| D. | Falling Film Evaporator |
| Answer» E. | |
| 3. |
How are the tube surfaces in falling film evaporators heated to enhance evaporation? |
| A. | Heaters at about 200℃ |
| B. | Heaters at above 200℃ |
| C. | Heaters at just above 100℃ |
| D. | Steam condensing at the outer wall |
| Answer» E. | |
| 4. |
Falling film evaporators are those in which evaporation takes place from the film interface with nucleate boiling at the wall. |
| A. | True |
| B. | False |
| Answer» C. | |
| 5. |
Why don’t we use Natural convection for evaporating waste streams, crystallizers, and viscous fluids? |
| A. | Slow process |
| B. | Sedimentation problem |
| C. | Prevents fouling at the heating surface |
| D. | Causes overheating |
| Answer» D. Causes overheating | |
| 6. |
Crystallizers are one of the most important setups in industries nowadays. It is solely used to dry a solution to an extent to obtain the crystals of the solute. Which one of the following is the most suitable operation to carry out this process? |
| A. | Forced Circulation |
| B. | Natural Circulation |
| C. | Nucleate Boiling |
| D. | Non-nucleate Boiling |
| Answer» B. Natural Circulation | |
| 7. |
What is the driving force for evaporation to take place? |
| A. | Difference in partial pressure |
| B. | Difference in pressure |
| C. | Difference in Concentration |
| D. | Difference in temperature |
| Answer» B. Difference in pressure | |
| 8. |
Which one of the following is not a suitable application of evaporators? |
| A. | Refrigeration |
| B. | Cooling |
| C. | Heating |
| D. | Crystallisation |
| Answer» D. Crystallisation | |
| 9. |
Refrigerators use liquid coolants which evaporate in an evaporator installed in a closed chamber. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 10. |
Which one of the following is not a type of evaporator? |
| A. | Forced Circulation |
| B. | Natural Circulation |
| C. | Nucleate Boiling |
| D. | Gasketed evaporators |
| Answer» E. | |