HVAC NEC 2023

HVAC Heat Pump Practice Test 5

Take a Free Practice Test on HVAC Heat Pump -5

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.

HVAC · NEC 2023
HVAC Heat Pump Practice Test 5
Q1 / 10
--:-- ON PACE
Auto-save 0% complete

0
Correct
0
Wrong
0s
Time

Student Reviews

No reviews yet — be the first to share your experience!

Leave a Review

5 stars
0/1000

HVAC Heat Pump Practice Test 5 — Question List

Question 1: What is the highest possible COP number of heat pump?

  • 1
  • 2
  • 3
  • 4

Question 2: Where does the defrost thermostat is located in heat pump?

  • Bottom of outdoor coil
  • Bottom of indoor coil
  • Above the outdoor coil
  • Above the indoor coil

Question 3: In which of the following heat pump cycle, the auxiliary heating element will be operated?

  • Cooling cycle
  • Heating cycle
  • Defrost cycle

Question 4: When the frost is formed on the outdoor coil of heat pump:

  • The efficiency of the heat pump decreases
  • The efficiency of the heat pump increases
  • It will damage the outdoor coil
  • It will increase the air flow thus increases heat exchange.

Question 5: In heat pump, what is the function of outdoor coil in cooling cycle?

  • Condensation
  • Evaporation
  • Compression
  • Expansion

Question 6: In which of the following heat pump modes, the inside heat is moved to outside of the house?

  • Cooling mode
  • Deforest mode
  • Repair mode
  • Heating mode

Question 7: What is the smallest leak that an electronic leak detector is cable of sensing per year?

  • 0.05 oz
  • 0.5 oz
  • 5 oz
  • 0.005 oz

Question 8: When 170 volts is supplied to 208/230 volts compressor ………..

  • It would cause current increase in the compressor
  • It would increase the resistance offered by the compressor
  • It would damage the compressor motor
  • It would cause power increase in the compressor

Question 9: In a heat pump, which of the following mode is best to charge with refrigerant?

  • Heating mode
  • Cooling mode
  • Deforest mode
  • Repair mode

Question 10: For every unit of electricity the heat pumps are capable of producing ………… or more units of heat.

  • 4 units
  • 3 units
  • 5 units
  • 6 units
EXAM CARD HVAC
Questions10
Time limit15 min
Pass score70%
Code editionNEC 2023
DifficultyIntermediate

Timer starts immediately. Progress is auto-saved.