MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 15 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. |
The pressure drop in a packed bed is _______ for a given length. |
| A. | Constant |
| B. | Exponentially Increasing |
| C. | Parabolically Increasing |
| D. | Linearly Increasing |
| Answer» E. | |
| 2. |
The Velocity profile in a packed bed reactor is__________ |
| A. | Fully parabolic |
| B. | Parabolic near the walls |
| C. | Flat at the centre |
| D. | Concave downward near the walls and upward at the centre |
| Answer» C. Flat at the centre | |
| 3. |
The Temperature profile in a packed bed reactor surrounded by a cooling liquid is__________ |
| A. | Fully parabolic |
| B. | Parabolic near the walls |
| C. | Flat at the centre |
| D. | Concave downward near the walls and upward at the centre |
| Answer» B. Parabolic near the walls | |
| 4. |
In a Packed Bed Shell and Tube HE, the pellets are usually kept _______ |
| A. | At Tube Side |
| B. | At Shell side |
| C. | At any side as required |
| D. | At floor of the shell |
| Answer» B. At Shell side | |
| 5. |
Packed Beds are one of the most common heat exchangers because of its very ______ |
| A. | High bed side heat transfer coefficient |
| B. | High wall side heat transfer coefficient |
| C. | High conductivity |
| D. | Low heat transfer rate |
| Answer» B. High wall side heat transfer coefficient | |
| 6. |
As an Indirect contact HE, Packed beds have _______ fluid flow. |
| A. | Continuous |
| B. | Constant |
| C. | Intermittent |
| D. | Reversing |
| Answer» D. Reversing | |
| 7. |
For an Exothermic Reaction, which of the following operation is best suited to support the reaction? |
| A. | Shell and tube with hot fluid in shell and packed bed in tube |
| B. | Shell and tube with cold fluid in shell and packed bed in tube |
| C. | Shell and tube with hot fluid in tube and packed bed in shell |
| D. | Shell and tube with cold fluid in tube and packed bed in shell |
| Answer» C. Shell and tube with hot fluid in tube and packed bed in shell | |
| 8. |
For an Endothermic Reaction, which of the following operation is best suited to support the reaction? |
| A. | Shell and tube with hot fluid in shell and packed bed in tube |
| B. | Shell and tube with cold fluid in shell and packed bed in tube |
| C. | Shell and tube with hot fluid in tube and packed bed in shell |
| D. | Shell and tube with cold fluid in tube and packed bed in shell |
| Answer» B. Shell and tube with cold fluid in shell and packed bed in tube | |
| 9. |
Which of the following is not a valid operation of packed bed reactors? |
| A. | Shell and Tube Setup |
| B. | Indirect contact setup |
| C. | Feedwater heater |
| D. | Direct Contact setup |
| Answer» D. Direct Contact setup | |
| 10. |
Why are Packed bed Heat Exchangers Direct contact type heat exchangers? |
| A. | Because they create heavy mixing |
| B. | Uses two fluids to transfer heat by dissolving into each other |
| C. | Gas liquid system where they are brought to direct contact |
| D. | Gas-Gas system where they are brought to direct contact |
| Answer» D. Gas-Gas system where they are brought to direct contact | |
| 11. |
Wall heated packed beds and wall cooled both have more or less the same correlations. |
| A. | True |
| B. | False |
| Answer» C. | |
| 12. |
It has been found that wall-cooled operations on packed beds show more effective heat transfer rate than wall-heated operations. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 13. |
Why is heating or cooling required in packed beds if we don t use it as a heat exchanger? |
| A. | To Cool Exothermic reactions |
| B. | To cool water by using ice as pellets |
| C. | To cool petroleum by using ice as pellets |
| D. | To heat exothermic reactions |
| Answer» B. To cool water by using ice as pellets | |
| 14. |
Which one of the following is not a use of packed bed? |
| A. | Regenerators |
| B. | Stripping |
| C. | Mixing |
| D. | Solid matrix heat exchangers |
| Answer» D. Solid matrix heat exchangers | |
| 15. |
Packed bed reactors are ________ heat exchangers. |
| A. | Indirect Contact |
| B. | Direct Contact |
| C. | Tubular |
| D. | Plate-type |
| Answer» C. Tubular | |