Question 1: The installation cost of heat pumps is more than electric resistance heaters.
- True
- False
HVAC
NEC 2023
HVAC Heat Pump Practice Test 2
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TimeHVAC Heat Pump Practice Test 2 — Question List
Question 2: The return air temperature of a 120000 Btu output furnace is measured as 75<sup>0</sup>C and supply side air temperature is 55<sup>0</sup>C. What would be CFM of furnace?
- 5555
- 6755
- 5685
- 7125
Question 3: 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 4: 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 5: In heat pump, what is the function of indoor coil in cooling cycle?
- Condensation
- Evaporation
- Compression
- Expansion
Question 6: Which of the following is the heat sink in heat pump cooling cycle?
- Air or water outside the structure
- Air in the room
- Ground and walls in the room
Question 7: 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 8: The time of defrost cycle depends on ………….
- The amount of frost has collected on coil
- The outdoor coil temperature
- Outdoor Fan speed
- All the options are correct
Question 9: In which of the following heat pump cycle, the auxiliary heating element will be operated?
- Cooling cycle
- Heating cycle
- Defrost cycle
Question 10: <strong> </strong>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
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