Refrigeration Operator B Practice Questions - Refrigeration Operator Class B Certification Exam

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How does an increase in superheat of the suction vapor at the evaporator outlet affect a refrigeration cycle's performance, assuming the suction pressure remains constant?

It significantly increases evaporator capacity and efficiency It decreases compressor discharge temperature It increases the specific volume of the vapor, reducing the mass flow rate of the compressor It prevents refrigerant oil from mixing with the vapor

Correct Answer:

It increases the specific volume of the vapor, reducing the mass flow rate of the compressor

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