MCQOPTIONS
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MCQOPTIONS
This section includes 8 Mcqs, each offering curated multiple-choice questions to sharpen your Food Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Statement 1: In coiled heat exchanger, the coils can be present inside and outside the vessel.Statement 2: The coils can have either hot/cold fluid present inside them or even electrical coils can be present. |
| A. | True, False |
| B. | True, True |
| C. | False, False |
| D. | False, True |
| Answer» C. False, False | |
| 2. |
Statement 1: Plate heat exchangers are used in heat sensitive foods like milk.Statement 2: Principle behind plate heat exchangers is that there is very less space between the plates and hence quick heating can take place. |
| A. | True, False |
| B. | True, True |
| C. | False, False |
| D. | False, True |
| Answer» C. False, False | |
| 3. |
Which of the following heat exchangers are used for the quick exchange of heat? |
| A. | Shell and tube heat exchangers |
| B. | Plate heat exchangers |
| C. | Scraped surface heat exchangers |
| D. | Jacketed Vessels |
| Answer» C. Scraped surface heat exchangers | |
| 4. |
Which of the following is untrue about scraped surface heat exchangers? |
| A. | They re unsuitable for viscous fluids |
| B. | They re suitable for fouling fluids |
| C. | They re used for continuous operation and have a double pipe |
| D. | None of the mentioned |
| Answer» B. They re suitable for fouling fluids | |
| 5. |
Statement 1: Scraping improves heat transfer co-efficient by 5 times in case of non-Newtonian fluids.Statement 2: In food industry, major physical changes to food items when they re processed, take place like transformation from Newtonian to Non-Newtonian fluids. Hence, scraped surface heat exchangers are very beneficial. |
| A. | True, False |
| B. | True, True |
| C. | False, False |
| D. | False, True |
| Answer» C. False, False | |
| 6. |
Statement 1: Generally, in small scaled jacketed pans, food products like jams, sauces etc are made.Statement 2: Baffles provide structural support to tubes, but they cannot prevent channeling. |
| A. | True, False |
| B. | True, True |
| C. | False, False |
| D. | False, True |
| Answer» B. True, True | |
| 7. |
Statement 1: Difference between 1-1 and 1-2 heat exchanger is that 1-2 has both counter AND co current, whereas 1-1 has only co-current.Statement 2: 1-2 heat exchanger requires a high pressure drop. |
| A. | True, False |
| B. | True, True |
| C. | False, False |
| D. | False, True |
| Answer» C. False, False | |
| 8. |
External heat exchangers are gaining popularity as they ve several advantages over conventional methods. Still, there is a major drawback. Which among the following is it? |
| A. | Some shear-sensitive cells might get damaged due to abrasion |
| B. | It is difficult for pumps to withstand high temperature without leakages of the fluid |
| C. | All of the mentioned |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |