MCQOPTIONS
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MCQOPTIONS
This section includes 9 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. |
Which one of the following is not an assumption in multiple effect evaporator’s calculations? |
| A. | There is no sub cooling of the condensate from different steam chests |
| B. | Heat transfer surface does not undergo fouling |
| C. | The entering steam is at their boiling point |
| D. | Pressure is same in every effect |
| Answer» E. | |
| 2. |
The vapours entering into the steam chest of respective effects of a multiple effect evaporator are at their saturation temperature. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 3. |
The multiple effect evaporators usually use __________ system of evaporation. |
| A. | Flash |
| B. | Natural convection |
| C. | Forced convection |
| D. | Bubble boiling |
| Answer» B. Natural convection | |
| 4. |
Which one of the following evaporator setup is the most versatile of all evaporators? |
| A. | Falling film long tube |
| B. | Agitated vessel |
| C. | Rising film |
| D. | Plate type evaporator |
| Answer» C. Rising film | |
| 5. |
Which one of the following evaporator is usually preferred for operation in a multiple effect for less viscous liquids? |
| A. | Falling film long tube |
| B. | Agitated vessel |
| C. | Rising film |
| D. | Plate type evaporator |
| Answer» B. Agitated vessel | |
| 6. |
In a multiple effect evaporator with more than one effects, the size of each effect should __________ |
| A. | Decrease if pressure decreases |
| B. | Increase if pressure decreases |
| C. | Remain same |
| D. | Should increase if pressure increases |
| Answer» D. Should increase if pressure increases | |
| 7. |
What is the number of effects used in the following setup?. |
| A. | Triple effect evaporator |
| B. | Single effect evaporator |
| C. | Quadruple effect evaporator |
| D. | Double effect evaporator |
| Answer» B. Single effect evaporator | |
| 8. |
What is the reason for using decreasing pressure on every subsequent effects in a multiple effect evaporator? |
| A. | To be able to reuse the vapour from previous effect |
| B. | To decrease the vapour pressure |
| C. | To increase the boiling point |
| D. | To decrease the boiling point |
| Answer» B. To decrease the vapour pressure | |
| 9. |
In a multiple effect evaporator, the pressure __________ as we move to subsequent effects. |
| A. | Decreases |
| B. | Increases |
| C. | Remains same |
| D. | Doubles |
| Answer» B. Increases | |