Question 1
A medium-temperature reach-in evaporator has a saturated suction temperature of 20 F and the suction line at the evaporator outlet reads 30 F. What is the evaporator superheat?
Correct Answer:
10 F
Question 2
On a walk-in cooler the saturated condensing temperature is 110 F and the liquid line at the condenser outlet reads 95 F. What is the subcooling?
Correct Answer:
15 F
Question 3
A low-temperature freezer operates with an absolute suction pressure of 30 psia and an absolute discharge pressure of 270 psia. What is the compression ratio?
Correct Answer:
9 to 1
Question 4
A produce walk-in cooler must maintain high relative humidity to keep vegetables fresh. Which evaporator temperature difference (TD) between box air and saturated suction is most appropriate?
Correct Answer:
About 8 to 10 F
Question 5
On a properly operating evaporator, raising the evaporator TD (box air temperature minus saturated suction temperature) generally has what effect on the box relative humidity?
Correct Answer:
Lowers the relative humidity
Question 1
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About this Exam

Prepare with the HVAC Excellence Master LC Refrigeration Practice Questions - HVAC Excellence Master Specialist - Light Commercial Refrigeration (Written Examination) Exam practice quiz. This question bank includes 100 questions covering temperature, suction, evaporator, compressor, and defrost. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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HVAC Excellence Master LC Refrigeration Practice Questions - HVAC Excellence Master Specialist - Light Commercial Refrigeration (Written Examination) Exam

This practice set contains 100 questions from the matching question bank and focuses on temperature, suction, evaporator, compressor, and defrost. 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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