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How is electric energy calculated in a unit operation?

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+2 votes
in Food Processing Unit Operations by (110k points)
How is electric energy calculated in a unit operation?

(a) Energy = power × time

(b) Energy= power /time

(c) Energy = power + time

(d) Energy = (power × time) + pressure

This question was addressed to me in an online interview.

Question is from Material and Energy Balances topic in chapter Material & Energy Balances of Food Processing Unit Operations

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Correct option is (a) Energy = power × time

To explain: The total amount of the electrical energy can be calculated by multiplying total power used by the equipment and time of the electricity consumed.

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