Question 1
NAC 624.380 limits Nevada C-21A refrigeration work to devices and machinery that control air temperatures in which range?
Correct Answer:
Below 50°F in refrigerators, refrigerated rooms, and insulated spaces
Question 2
In the vapor-compression cycle used on a walk-in freezer, which four components appear in order of refrigerant flow?
Correct Answer:
Compressor, condenser, metering device, evaporator
Question 3
What is the evaporator's job in a 0°F walk-in freezer?
Correct Answer:
Absorb heat from the box air so the refrigerant vaporizes
Question 4
Where does a refrigeration system reject the heat it removed from a refrigerated room?
Correct Answer:
At the condenser (or condensing unit) to air or water
Question 5
How is evaporator superheat calculated on a DX freezer coil?
Correct Answer:
Actual suction-vapor temperature minus saturation temperature at the suction pressure
Question 1
Exam overview

About this Exam

Prepare with the NV C-21A Refrigeration Practice Questions - Nevada C-21A Refrigeration Contractor Examination Exam practice quiz. This question bank includes 100 questions covering r-404a, freezer, walk-in, refrigerant, and evaporator. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

More details

Additional Information

NV C-21A Refrigeration Practice Questions - Nevada C-21A Refrigeration Contractor Examination Exam

This practice set contains 100 questions from the matching question bank and focuses on r-404a, freezer, walk-in, refrigerant, and evaporator. 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.

Quiz information

Frequently Asked Questions

The complete question count is available after full access is unlocked.
No fixed duration is currently configured for this quiz.
Question explanations are included where they are available in the quiz content, helping you review the reasoning after answering.
Yes. You can retake the practice test again as you continue studying during your available access period.
After your access is confirmed, you can continue into the complete practice exam from this quiz flow.
Unless explicitly stated otherwise, this page provides independent practice material for study and exam preparation and is not the official examination itself.
Keep studying

Related Questions