NV C-21D Refrigeration and AC Maintenance Practice Questions - Nevada C-21D Refrigeration and Air Conditioning Maintenance Contractor Examination Exam - NV C-21D Refrigeration and AC Maintenance Practice Questions - Nevada C-21D Refrigeration and Air Conditioning Maintenance Contractor Examination Exam

Question 1

Under NAC 624.380, which task is within Nevada C-21D Refrigeration and Air Conditioning Maintenance scope?

Replace the complete remote condenser assembly on a split refrigeration system Replace an existing air handler with a larger-capacity unit Redesign a rooftop unit to a different refrigerant and new coil circuiting Replace a failed compressor, motor, relay, or coil on an existing air-conditioning unit

Correct Answer:

Replace a failed compressor, motor, relay, or coil on an existing air-conditioning unit

Question 2

A C-21D contractor is asked to swap the entire outdoor remote condenser assembly on an existing split refrigeration rack. What is the correct scope decision?

Proceed; any outdoor work is C-21D maintenance Decline the complete assembly replacement; C-21D may replace condenser coils, fans, motors, and relays, but not the complete remote condenser assembly Proceed if the new assembly has the same footprint Proceed if the owner signs a design-change waiver

Correct Answer:

Decline the complete assembly replacement; C-21D may replace condenser coils, fans, motors, and relays, but not the complete remote condenser assembly

Question 3

Which existing-system repair is allowed under C-21D without altering system design?

Replace the indoor air handler and resize the supply duct Convert a capillary-tube system to a custom-engineered EEV rack Install a new split system where none exists Replace a leaking evaporator coil with a same-circuit, same-capacity coil

Correct Answer:

Replace a leaking evaporator coil with a same-circuit, same-capacity coil

Question 4

What are the four essential components of the vapor-compression refrigeration cycle on an existing C-21D unit?

Compressor, reversing valve, receiver, and accumulator Compressor, condenser, metering device, and evaporator Condenser, cooling tower, pump, and expansion tank Filter-drier, sight glass, service valve, and crankcase heater

Correct Answer:

Compressor, condenser, metering device, and evaporator

Question 5

On an operating air-conditioning unit, where does refrigerant absorb heat from the conditioned air?

The condenser coil The compressor discharge muffler The evaporator coil The liquid-line filter-drier

Correct Answer:

The evaporator coil

Exam overview

About this Exam

Prepare with the NV C-21D Refrigeration and AC Maintenance Practice Questions - Nevada C-21D Refrigeration and Air Conditioning Maintenance Contractor Examination Exam practice quiz. This question bank includes 100 questions covering existing, unit, c-21d, refrigeration, and superheat. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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NV C-21D Refrigeration and AC Maintenance Practice Questions - Nevada C-21D Refrigeration and Air Conditioning Maintenance Contractor Examination Exam

This practice set contains 100 questions from the matching question bank and focuses on existing, unit, c-21d, refrigeration, and superheat. 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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NV C-21D Refrigeration and AC Maintenance Practice Questions - Nevada C-21D Refrigeration and Air Conditioning Maintenance Contractor Examination Exam

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