Explore topic-wise MCQs in Food Engineering.

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
Discussion
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
Discussion
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
Discussion
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
Discussion
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
Discussion
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
Discussion
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
Discussion
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
Discussion