HVAC Technician Core (NATE-style) — Practice Exam
Comfort: heat: practice questions
Our HVAC Core (NATE-style) bank has 13 questions on this topic. Here are 3 of them with answers; the full mock exam draws from every topic, like the real one.
Question 1
What is a BTU?
- A unit of electrical power
- The heat needed to raise 1 pound of water by 1°F
- The heat needed to raise 1 gram of water by 1°C
- The heat needed to raise 1 gallon of water by 10°F
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B. The heat needed to raise 1 pound of water by 1°F — British thermal unit.
Question 2
How much heat must be removed to freeze 1 pound of water at 32°F into ice?
- About 970 BTU
- About 144 BTU
- About 1 BTU
- About 32 BTU
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B. About 144 BTU — Latent heat of fusion.
Question 3
What is latent heat?
- Heat from compressor motors
- Heat that raises temperature and can be read on a thermometer
- Heat absorbed or released during a change of state at constant temperature
- Heat stored in metal
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C. Heat absorbed or released during a change of state at constant temperature — Condensing moisture removes latent heat.