Complete GATE XL 2020 Paper 1 overview, original pages and practice · Timed previous-paper practice

Questions 124–125 of 125. Imported answers require review unless explicitly marked reviewed.

Paper practice 125 questionsPage 42 of 42

Question 19

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XL-UMCQ2 marksNeeds review
During extrusion cooking, food materials are generally subjected to a combination of
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Question 20

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XL-UNAT2 marksNeeds review
An orange juice flowing at 0.80 kg s

enters a counter current double pipe heat exchanger at 20 °C and leaves at 72 °C. Inlet and outlet temperatures of the hot water used as heating medium in the exchanger are 81 °C and 74 °C, respectively. The specific heat of the orange juice is 3.74 kJ kg

K

and overall heat transfer coefficient is 492 W m

K

. The heat transfer surface area (round off to 2 decimal places) will be ______ m

.

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