MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 12 Mcqs, each offering curated multiple-choice questions to sharpen your Heat Transfer Operations knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
How is the pressure application in different effects in a multiple effect evaporator decided? |
| A. | Evaluating boiling point elevation by Duhring s rule |
| B. | Boiling point fall due to pressure drop by Arrhenius rule |
| C. | Evaluating boiling point elevation by Kozeny Carman rule |
| D. | Boiling point fall due to pressure drop by Sieder tate rule |
| Answer» B. Boiling point fall due to pressure drop by Arrhenius rule | |
| 2. |
Backward feed evaporators are superior to forward feed in concentrating solutions to a higher extent! Why? |
| A. | Because the highest concentration effect gets the highest pressure |
| B. | Because the highest concentration gets the highest temperature |
| C. | Because the highest concentration effect gets the lowest pressure |
| D. | Because the highest concentration gets the lowest temperature |
| Answer» C. Because the highest concentration effect gets the lowest pressure | |
| 3. |
Which one of the following evaporator can work without pump? |
| A. | Forward feed |
| B. | Backward feed |
| C. | Parallel feed |
| D. | Mixed feed |
| Answer» B. Backward feed | |
| 4. |
The concentration of the feed in parallel feed evaporator ____________ with subsequent effects if pressure decreases. |
| A. | Should increase |
| B. | Should decrease |
| C. | Should be same |
| D. | Cannot be inferred |
| Answer» B. Should decrease | |
| 5. |
The pressure in backward feed evaporator also decreases along the feed direction to avoid excessive use of pumps. |
| A. | True |
| B. | False |
| Answer» C. | |
| 6. |
Which one of the following evaporator uses maximum mechanical energy to operate? |
| A. | Forward feed |
| B. | Backward feed |
| C. | Parallel feed |
| D. | Mixed feed |
| Answer» C. Parallel feed | |
| 7. |
Forward feed evaporator use minimum energy of operation as the there is no requirement of pumps to carry the feed from effect to effect. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 8. |
What is the possible solution to increase the evaporation rate in subsequent effects in forward feed evaporators? |
| A. | Increasing pressure |
| B. | Decreasing pressure |
| C. | Increasing temperature |
| D. | Decreasing temperature |
| Answer» C. Increasing temperature | |
| 9. |
The boiling point of the solution ________ as we move to subsequent effects in a parallel feed evaporator. |
| A. | Decreases |
| B. | Increases |
| C. | Remains same |
| D. | Is independent |
| Answer» E. | |
| 10. |
The boiling point of the solution ________ as we move to subsequent effects in a Mixed feed evaporator. |
| A. | Decreases |
| B. | Increases |
| C. | Remains same |
| D. | Oscillates |
| Answer» E. | |
| 11. |
The boiling point of the solution ________ as we move to subsequent effects in a backward feed evaporator. |
| A. | Decreases |
| B. | Increases |
| C. | Remains same |
| D. | Oscillates |
| Answer» B. Increases | |
| 12. |
The boiling point of the solution ________ as we move to subsequent effects in a forward feed evaporator. |
| A. | Decreases |
| B. | Increases |
| C. | Remains same |
| D. | Oscillates |
| Answer» C. Remains same | |