Describe what happens during the defrost cycle?

What will be an ideal response?


The defrost cycle is similar to the cooling cycle, except that the outdoor fan is de-energized and the strip heaters are energized.

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A baker has developed a marvelous cookie recipe that works best if the cookie is cooled in a vacuum chamber through radiation heat transfer alone. The cookie is placed inside the chamber with a surface temperature of 125°C. Assume that the cookie is thin enough so that the temperature is uniform throughout during the cooling process. The walls of the chamber are maintained at 10.0°C. If the surface area of the cookie is 0.005 m2, and if the emissivity of the cookie is 0.80, determine the initial radiation heat transfer rate from the cookie to the walls of the chamber.

Given: Ts = 125°C = 398 K; Tsurr = 10°C = 283 K; A = 0.005 m2; ? = 0.80 What will be an ideal response?

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Most injuries in the workplace occur when dysfunctional equipment causes an accident that could not

have been avoided.

Indicate whether the statement is true or false.

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What unit specification should be used to size the overcurrent protection?

A) The locked rotor amps (LRA) B) The minimum circuit ampacity (MCA) C) The maximum overcurrent protection (MOCP) D) The rated load amps (RLA)

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When the signal person holds the forearm vertical, with the forefinger pointing up, and moves the hand in a

small circle, the crane operator is to _____. a. lower the boom b. hoist the load c. use the whip line d. dog everything

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