MCQOPTIONS
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MCQOPTIONS
This section includes 13 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. |
The reflux condenser must be designed such that vapour velocity is ________ the flooding velocity. |
| A. | Less than |
| B. | More than |
| C. | Equal to |
| D. | Oscillating with |
| Answer» B. More than | |
| 2. |
A condenser has coolant in counter-current flow with the vapour flowing upward and itself flowing downward, then it is commonly known as the _______________ |
| A. | Packed column |
| B. | Reflux condenser |
| C. | Sparge tube condenser |
| D. | Tray type condenser |
| Answer» C. Sparge tube condenser | |
| 3. |
__________ condensers are preferred if the condensing fluid is at a higher pressure than the coolant. |
| A. | Shell side |
| B. | Tube side |
| C. | Front side |
| D. | Back side |
| Answer» C. Front side | |
| 4. |
Tube-side condenser is preferred when the coolant is a gas, such as air. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 5. |
Condensation on the ____________ is preferred when the coolant is a gas. |
| A. | Shell side |
| B. | Tube side |
| C. | Front side |
| D. | Back side |
| Answer» B. Tube side | |
| 6. |
A possible configuration for low pressure drop is the ______________ |
| A. | K-shell with double segmental baffles |
| B. | J-shell with double segmental baffles |
| C. | M-shell with double segmental baffles |
| D. | N-shell with double segmental baffles |
| Answer» C. M-shell with double segmental baffles | |
| 7. |
The size of the baffle cut is generally chosen such that the vapour velocity in the tube is _________ that in the overlap area between the baffle discs. |
| A. | More than |
| B. | Equal to |
| C. | Less than |
| D. | Very less than |
| Answer» C. Less than | |
| 8. |
_______________ can reduce resistance to heat transfer through the shear effect on the condensate film. |
| A. | Low vapour velocity |
| B. | Fluctuating vapour velocity |
| C. | High vapour velocities |
| D. | Oscillating vapour velocity |
| Answer» D. Oscillating vapour velocity | |
| 9. |
The space between the baffles is not determined by considerations such as _____________ |
| A. | The tubes need to be supported to avoid tube vibration |
| B. | Pressure drop depends on vapour velocity which itself depends on baffle spacing |
| C. | The resistance to heat transfer because of non-condensing gases is inversely proportional to the vapour velocity |
| D. | Low vapour velocities can reduce resistance to heat transfer |
| Answer» E. | |
| 10. |
_______________ baffles may be specified to achieve reduced pressure drop. |
| A. | Double segmental |
| B. | Single segmental |
| C. | Triple segmental |
| D. | Quadruple segmental |
| Answer» B. Single segmental | |
| 11. |
The__________ condenser is generally used for low-pressure applications, where there is a large volume of vapour flow and a low-pressure drop is desired. |
| A. | Co-current Flow |
| B. | Counter flow |
| C. | Cross-flow |
| D. | Mixed flow |
| Answer» D. Mixed flow | |
| 12. |
Which one of the following condenser matches the given description – ‘The condenser has a shell containing tubes within which the coolant liquid usually flows. The flow on the shell-side is so designed that the vapour gas mainly flows in the cross-flow direction with respect to the tubes’? |
| A. | Cross-flow |
| B. | Counter flow |
| C. | Co-current Flow |
| D. | Mixed flow |
| Answer» B. Counter flow | |
| 13. |
Which one of the following is not a shell and tube condenser? |
| A. | Baffled |
| B. | Cross-flow |
| C. | Tube-side |
| D. | Sparge pipe |
| Answer» E. | |