Question 1: The defrost thermostat closes when the temperature of outdoor coil drops to …………….
- 32 <sup>0</sup>F
- 42 <sup>0</sup>F
- 37 <sup>0</sup>F
- 57 <sup>0</sup>F
HVAC
NEC 2023
HVAC Heat Pump Practice Test 3
Take a Free Practice Test on HVAC Heat Pump -3
TOPICS COVERED
HVAC Practice tests
How this test works
Read each question carefully
Look for absolute words like always / never — they often distinguish the right answer.
Manage your time
You have 15 min for 10 questions. Skip tough ones and come back.
Progress is auto-saved
Your answers are saved locally — a page refresh won't lose your work.
Review your answers
After submitting you'll see every explanation and your NEC references.
Frequently Asked Questions
Yes — completely free with no signup required.
HVAC electrical exams cover electrical theory (Ohm's Law, circuits), transformers, single-phase and three-phase motors, control wiring, safety, and troubleshooting.
Requirements vary by state. HVAC technicians typically need EPA 608 certification and may need a separate electrical license for line voltage work.
10
Questions
15 min
Time
70%
Pass
Timer starts immediately. Progress is auto-saved.
0
Correct0
Wrong0s
TimeHVAC Heat Pump Practice Test 3 — Question List
Question 2: Which of the following is the heat sync for air to air heat pump?
- Outdoor air
- Indoor air
- Water
- Ground
Question 3: What is the minimum SEER Rating of cooling as specified by US department of Energy?
- 10.0
- 1.0
- 5.0
- 8.0
Question 4: Which of the following is the measure of overall heating efficiency of heat pump?
- SEER
- HSPF
- COP
- EER
Question 5: Which of the following compressors are mostly used in residential and light commercial constructions?
- Semi hermetic compressors
- Hermetic compressors
- Open type compressors
Question 6: Which of the following is the state of refrigerant at outlet of indoor coil during cooling cycle?
- Liquid
- Gas
Question 7: Which of the following component of heat pump allows the heat pump to operate either in cooling and heating mode?
- Reversing valve
- Expansion valve
- Safety valve
- Pressure relief valve
Question 8: What may be the possible cause for an insufficient heating or cooling in a heat pump?
- Blower not operating
- Incorrect setting of thermostat
- Low refrigerant charge
- High compressor discharge pressure
Question 9: The refrigerant circuit evacuation is said to be complete, when the vacuum pressure reaches ……….. microns or less?
- 500
- 600
- 800
- 1000
Question 10: Which of the following motors require less starting current?
- Single phase
- Poly phase
Student Reviews
No reviews yet — be the first to share your experience!
Leave a Review