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.

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.

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.

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?

Some shear-sensitive cells might get damaged due to abrasion

It is difficult for pumps to withstand high temperature without leakages of the fluid

Explore topic-wise MCQs in Food Engineering Questions and Answers.

This section includes 4 Mcqs, each offering curated multiple-choice questions to sharpen your Food Engineering Questions and Answers knowledge and support exam preparation. Choose a topic below to get started.

1.	Statement 1: Plate heat exchangers are used in heat sensitive foods like milk.
A.	Statement 2: Principle behind plate heat exchangers is that there is very less space between the plates and hence quick heating can take place.
B.	True, False
C.	True, True
D.	False, False
E.	False, True
Answer» C. True, True

Discussion

2.	Statement 1: Scraping improves heat transfer co-efficient by 5 times in case of non-Newtonian fluids.
A.	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.
B.	True, False
C.	True, True
D.	False, False
E.	False, True
Answer» C. True, True

Discussion

3.	Statement 1: Generally, in small scaled jacketed pans, food products like jams, sauces etc are made.
A.	Statement 2: Baffles provide structural support to tubes, but they cannot prevent channeling.
B.	True, False
C.	True, True
D.	False, False
E.	False, True
Answer» B. True, False

Discussion

4.	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