Which of the following dryers cannot take a feed in the form of pastes/slurries/sticky items?

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Which of the following dryers requires non-sticky granular feed?

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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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Statement 1: In a rising film evaporator, the feed can be very viscous. Statement 2: In a rising film evaporator, the feed cannot be heat sensitive.

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Which of the following dryers is used for making baby food?

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Coffee powders can be made from which of the following dryers?

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Cabinet tray dryers are not very effective as they do not completely strip off the moisture content from the food item. Hence, they need to be combined with another dryer for effective results.

asked Jan 30, 2022 in Food Engineering by Amelia (93.7k points)

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Statement 1: Cabinet tray dryers are used for storing grains. Statement 2: Cabinet tray dryers are used for low cost foods.

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Statement 1: Forward feeding requires pumps for the feed at every step. Statement 2: In a backward feeding arrangement, the most concentrated feed is exposed to the maximum steam in order to remove heat. This is its advantage.

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Statement 1: Horizontal tube evaporator is easy for cleaning. Statement 2: Horizontal tube evaporator has a disadvantage of hindering agitation of the feed.

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Mixed feed arrangement offers the advantage of omitting the usage of pumps by transferring feed in the direction of low pressure. That’s an advantage taken from forward feeding arrangement.

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Moisture on dry basis cannot be more than a hundred percentage.

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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.

asked Jan 30, 2022 in Food Engineering by Amelia (93.7k points)

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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.

asked Jan 30, 2022 in Food Engineering by Amelia (93.7k points)

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One disadvantage with backward feeding is that the feed gets very concentrated at the beginning few units itself and hence it’s difficult to feed it to the next evaporator unit.

asked Jan 30, 2022 in Food Engineering by Amelia (93.7k points)

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In a packaging of dry grapes, the packaging material is made of polyethylene. The dry grapes have certain moisture content. Which of the following is true with respect to the diffusion of certain amount of moisture through the packing?

asked Jan 30, 2022 in Food Engineering by Amelia (93.7k points)

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At a food processing industry, the steam was re-compressed and a small amount of steam at high pressures and temperatures was sent into the next evaporation chamber in a multiple effect evaporator. Which of the following is true with respect to the above sentences?

asked Jan 30, 2022 in Food Engineering by Amelia (93.7k points)

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

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Which of the following is also called a ring dryer?

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Which of the following is not a measuring technique of KLa?

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Which of the following is NOT a part of the microwave heating system?

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

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The existence of a thick constant film between two phases is a proposal by which of the following theories?

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Which of the following is untrue? (a)It is difficult to predict the electric field intensity inside a food material

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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?

asked Jan 30, 2022 in Food Engineering by Amelia (93.7k points)

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Industry A is low on budget and is used in the sugar industry. Industry B wants to invest in a good evaporator. They are needed for meat extracts. Which evaporators will you suggest for each of them?

asked Jan 30, 2022 in Food Engineering by Amelia (93.7k points)

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