Q. Statement 1: Radiation dryers are used to dry grains and reduce their moisture content before storage.
Statement 2: Baking ovens are used both for making the dough and after that’s made, making biscuits by cutting them and baking them further. This entire process uses radiation.

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Q. In deep freezers, the walls absorb heat from food materials by _____ and keep them cool.

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Q. Radiation dryers use _____

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Q. Which of the following sentences is true?

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Q. If _______ heating has higher heat transfer rates than _______ heating, then why is ________ difficult to be used.

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Q. In a jacketed vessel, the only way to increase the heat transfer rates is to increase the temperature difference.

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Q. Which of the following is an advantage of using pumps as heat transfer equipment?

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Q. 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?

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Q. Contamination takes place to high extend in Plate heat exchangers.

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Q. 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.

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Q. Which of the following is a parameter to be checked before choosing the shape of the pitch in heat exchangers?

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Q. 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.

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Q. 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.

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Q. 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.

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Q. Which of the following is untrue about scraped surface heat exchangers?

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Q. Which of the following heat exchangers are used for the quick exchange of heat?

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Q. 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.

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Q. Which of the following is true about Plate heat exchangers?

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Q. Which of the following is a synonym for loss factor of food?

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Q. Which of the following is true about loss factor of food?

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