Question 1
Which state of refrigerant leaves the evaporator coil in a correctly operating vapor compression refrigeration system?
Correct Answer:
Superheated low-pressure vapor
Question 2
How is evaporator superheat calculated during system performance testing?
Correct Answer:
Suction line pipe temperature minus evaporating temperature corresponding to suction pressure
Question 3
What type of heat transfer causes a change in temperature of a substance without changing its physical state?
Correct Answer:
Sensible heat
Question 4
Which component in a basic vapor compression system divides the high-pressure side from the low-pressure side on the liquid line?
Correct Answer:
Expansion device (metering valve)
Question 5
If a pressure gauge on an R404A system reads 4.0 bar gauge (bar g) evaporating pressure, what does the corresponding saturation temperature represent?
Correct Answer:
The boiling temperature of the refrigerant inside the evaporator
Question 1
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About this Exam

Prepare with the City & Guilds 6187 RAC Practice Questions - City & Guilds 6187 Level 2 3 Diploma in Refrigeration, Air Conditioning and Heat Pump Technology Exam practice quiz. This question bank includes 100 questions covering valve, line, pressure, expansion, and compressor. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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City & Guilds 6187 RAC Practice Questions - City & Guilds 6187 Level 2 3 Diploma in Refrigeration, Air Conditioning and Heat Pump Technology Exam

This practice set contains 100 questions from the matching question bank and focuses on valve, line, pressure, expansion, and compressor. 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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