RETA CARO Practice Questions - RETA Certified Assistant Refrigeration Operator Exam - RETA CARO Practice Questions - RETA Certified Assistant Refrigeration Operator Exam

Question 1

In a basic vapor-compression refrigeration cycle, which component is responsible for absorbing heat from the refrigerated space?

Compressor Condenser Evaporator Receiver

Correct Answer:

Evaporator

Question 2

Anhydrous ammonia used as a refrigerant in industrial systems is commonly designated as which ASHRAE refrigerant number?

R-22 R-134a R-717 R-404A

Correct Answer:

R-717

Question 3

What is the primary federal regulation in the United States that requires a Process Safety Management (PSM) program for industrial ammonia refrigeration systems containing 10,000 lb or more of ammonia?

OSHA 29 CFR 1910.119 OSHA 29 CFR 1910.147 EPA 40 CFR 82 DOT 49 CFR 173

Correct Answer:

OSHA 29 CFR 1910.119

Question 4

During normal operation, what is the correct flow of refrigerant through the four main components of a single-stage vapor-compression cycle starting at the compressor discharge?

Compressor -> evaporator -> expansion device -> condenser Compressor -> condenser -> expansion device -> evaporator Compressor -> expansion device -> condenser -> evaporator Compressor -> condenser -> evaporator -> expansion device

Correct Answer:

Compressor -> condenser -> expansion device -> evaporator

Question 5

Which device is typically used to meter liquid refrigerant into the evaporator while dropping pressure from the high side to the low side of the system?

Check valve Thermostatic expansion valve (TXV) Oil separator Suction accumulator

Correct Answer:

Thermostatic expansion valve (TXV)

Question 1

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About this Exam

Prepare with the RETA CARO Practice Questions - RETA Certified Assistant Refrigeration Operator Exam practice quiz. This question bank includes 100 questions covering ammonia, refrigeration, compressor, industrial, and refrigerant. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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RETA CARO Practice Questions - RETA Certified Assistant Refrigeration Operator Exam

This practice set contains 100 questions from the matching question bank and focuses on ammonia, refrigeration, compressor, industrial, and refrigerant. Work through each question carefully, review the provided solutions, and revisit topics that need more study before your next attempt.

This is an independent study resource intended for practice and review; it is not an official examination or an endorsement by any organization named in the title.

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RETA CARO Practice Questions - RETA Certified Assistant Refrigeration Operator Exam

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