Question 1
The NATE Light Commercial Refrigeration Service exam covers systems within what horsepower range?
Correct Answer:
Fractional horsepower up to 7.5 HP
Question 2
When installing a horizontal suction line that rises to an evaporator above the condensing unit, why should a P-trap be installed at the base of the riser?
Correct Answer:
To collect oil so it can be carried up the riser by refrigerant vapor velocity
Question 3
While brazing copper refrigerant lines, what should be flowing through the tubing to prevent the formation of copper oxide scale inside the pipe?
Correct Answer:
Dry nitrogen
Question 4
After brazing and before charging a light commercial system, a technician pulls the system into a deep vacuum. What is the primary purpose of evacuation?
Correct Answer:
To remove non-condensables and moisture from the system
Question 5
Which instrument is used to accurately confirm that a system has reached a deep enough vacuum during evacuation?
Correct Answer:
Micron gauge
Question 1
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About this Exam

Prepare with the NATE LC Refrigeration Practice Questions - NATE Light Commercial Refrigeration Service Specialty Exam practice quiz. This question bank includes 100 questions covering evaporator, installed, compressor, pressure, and temperature. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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NATE LC Refrigeration Practice Questions - NATE Light Commercial Refrigeration Service Specialty Exam

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