Where do commercial refrigeration "rack" systems get their name?

A) RACK stands for Refrigeration Air Conditioning Kontrol.
B) They use multiple compressors mounted in a row on a rack.
C) They were originally developed by Refrigeration of Ackworth Corporation.
D) They use multiple individual condensing units mounted on a large rack outside.


B

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Technician A says that eye contamination should be treated by flushing with water. Technician B says that professional help should be involved in the event of eye contamination. Which technician is correct?

A) Technician A only B) Technician B only C) Both technicians A and B D) Neither technician A nor B

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What breaks down to form poisonous gas in the presence of flames?

A) A1 refrigerant only B) Compressor insulation C) Halogenated refrigerants D) Refrigerant oil

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In a balanced ?-? circuit shown below, the source voltage is Vab = 655?0o V (rms). The wire impedance is Zw = 15 + j12 and the phase impedance is Z? = 54 + j48 ? per phase. Find the phase currents and line currents.

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A(n) ____________________ is a repaired vehicle that is returned to the shop by an unsatisfied customer.

Fill in the blank(s) with the appropriate word(s).

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