Test your basic knowledge |

NATE Air Conditioning Components

Instructions:

Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can study here.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.

1. In a sealed system - as the pressure increases...
Metering device (restrictor)
Must be located in a conspicuous place to serve as an alarm
Compressor
The temperature increases

2. Where does the refrigerant change from a high-pressure liquid to a low-pressure liquid...
A compression fitting
Metering device (restrictor)
The cooling contactor coil
To prevent condensation from forming

3. When installing a refrigeration line set through a masonry wall
Condenser
Must be located in a conspicuous place to serve as an alarm
The lines must be covered by PVC to prevent contact with the masonry material
Compressor

4. Which part of the system prevents liquid from entering the compressor...
Insulated
The accumulator
24 volts
Must be coiled horizontally and the vapor must flow from top to bottom

5. In a sealed system - as the pressure increases...
Must be located in a conspicuous place to serve as an alarm
The receiver
The suction line must be pitched toward the condensing unit
The temperature increases

6. Residential split-system outdoor condensing units are commonly wired with a...
Refrigerant must be added to the system
208-volt/240-volt single-phase power supply
The suction line must be pitched toward the condensing unit
Insulated

7. To ensure proper oil return to the compressor - when installing a refrigeration line set...
The cooling contactor coil
The compressor and condenser connected by a refrigeration line set to the metering device and evaporator
The contactor coil
The suction line must be pitched toward the condensing unit

8. A normally closed float switch that is connected to an auxiliary drain pan should be wired to control...
The cooling contactor coil
The compressor and condenser connected by a refrigeration line set to the metering device and evaporator
The accumulator
The contactor coil

9. Residential split-system outdoor condensing units are commonly wired with a...
Evaporator
208-volt/240-volt single-phase power supply
The coil is precharged with nitrogen
The temperature increases

10. To ensure proper oil return to the compressor - a coiled refrigeration lineset...
A compression fitting
The cooling contactor coil
Must be coiled horizontally and the vapor must flow from top to bottom
Metering device

11. Where does the refrigerant change from a high-pressure gas to a high-pressure liquid...
Condenser
Refrigerant must be added to the system
Compressor
To prevent condensation from forming

12. Where does the refrigerant change from a high-pressure liquid to a low-pressure liquid...
Condenser
Must be coiled horizontally and the vapor must flow from top to bottom
Metering device (restrictor)
208-volt/240-volt single-phase power supply

13. The part of an air conditioning system that changes the refrigerant from a high-pressure gas to a high-pressure liquid is the...
The lines must be covered by PVC to prevent contact with the masonry material
The temperature increases
The temperature increases
Condenser

14. Where does the refrigerant change from a high-pressure gas to a high-pressure liquid...
The coil is precharged with nitrogen
The coil is precharged with nitrogen
The heating control circuit
Condenser

15. An auxiliary drain pan must...

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183

16. When installing an evaporator coil - before soldering - the end of the evaporator lines must be opened to the atmosphere because...
The blower relay coil
Refrigerant must be added to the system
The coil is precharged with nitrogen
The compressor and condenser connected by a refrigeration line set to the metering device and evaporator

17. Which part of the system stores refrigerant until it is needed in the evaporator...
The heating control circuit
The temperature increases
The receiver
The heating control circuit

18. A normally closed float switch that is connected to an auxiliary drain pan should be wired to control...
This will prevent settling of the ground - which can cause refrigerant line damage
Near a return-air grill
The lines must be covered by PVC to prevent contact with the masonry material
The contactor coil

19. What is the 'G' terminal used for on the thermostat...
This will prevent settling of the ground - which can cause refrigerant line damage
The blower relay coil
The cooling contactor coil
Compressor

20. What is the 'Y' terminal used for on the thermostat...
The cooling contactor coil
Precharged refrigeration linesets
The receiver
Near a return-air grill

21. The part of an air conditioning system that changes the refrigerant from a high-pressure gas to a high-pressure liquid is the...
Compressor
Condenser
A compression fitting
Evaporator

22. Why is it recommended to add a gravel fill under the pad of a condensing unit...
Compressor
This will prevent settling of the ground - which can cause refrigerant line damage
The coil is precharged with nitrogen
208-volt/240-volt single-phase power supply

23. Which part of the system stores refrigerant until it is needed in the evaporator...
The lines must be covered by PVC to prevent contact with the masonry material
The receiver
The heating control circuit
A TXV

24. What is the 'W' terminal used for on the thermostat...
Refrigerant must be added to the system
The suction line must be pitched toward the condensing unit
Must be located in a conspicuous place to serve as an alarm
The heating control circuit

25. A secondary drain line...
Near a return-air grill
Evaporator
A TXV
Must be located in a conspicuous place to serve as an alarm

26. The part of an air conditioning system that changes the refrigerant from a high-pressure liquid to a low-pressure liquid is the...
The temperature increases
Evaporator
Metering device
Have a minimum perimeter of 3' larger than the unit being served

27. What must be done to the system when a condensing unit is precharged for 25' of refrigerant line and uses 32' of refrigerant line...
Capillary action
Refrigerant must be added to the system
Have a minimum perimeter of 3' larger than the unit being served
Insulated

28. What type of fitting uses an O-ring to help seal its joint...
The contactor coil
A compression fitting
Condenser
Refrigerant must be added to the system

29. When installing an evaporator coil - before soldering - the end of the evaporator lines must be opened to the atmosphere because...
Compressor
24 volts
The coil is precharged with nitrogen
The heating control circuit

30. What type of fitting uses an O-ring to help seal its joint...
The lines must be covered by PVC to prevent contact with the masonry material
A compression fitting
Precharged refrigeration linesets
The blower relay coil

31. To ensure proper oil return to the compressor - a coiled refrigeration lineset...
24 volts
Must be coiled horizontally and the vapor must flow from top to bottom
Refrigerant must be added to the system
Condenser

32. The part of an air conditioning system that changes the refrigerant from a low-pressure liquid to a low-pressure gas is the...
The accumulator
24 volts
The blower relay coil
Evaporator

33. Where does the refrigerant change from a low-pressure gas to a high-pressure gas...
This will prevent settling of the ground - which can cause refrigerant line damage
Evaporator
24 volts
Compressor

34. When soldering a copper connection and solder is drawn into the joint - This is commonly called...
The temperature increases
Precharged refrigeration linesets
Must be coiled horizontally and the vapor must flow from top to bottom
Capillary action

35. What is the purpose for insulating a suction line...
To prevent condensation from forming
A TXV
Precharged refrigeration linesets
Near a return-air grill

36. Where does the refrigerant change from a low-pressure gas to a high-pressure gas...
The temperature increases
Capillary action
Compressor
Evaporator

37. Quick-connect fittings are commonly used on...
Precharged refrigeration linesets
Must be located in a conspicuous place to serve as an alarm
Metering device
The power from the transformer

38. To ensure proper oil return to the compressor - when installing a refrigeration line set...
The suction line must be pitched toward the condensing unit
24 volts
A compression fitting
208-volt/240-volt single-phase power supply

39. When installing a refrigeration line set through a masonry wall
Capillary action
Near a return-air grill
Compressor
The lines must be covered by PVC to prevent contact with the masonry material

40. When soldering a copper connection and solder is drawn into the joint - This is commonly called...
The blower relay coil
Precharged refrigeration linesets
The power from the transformer
Capillary action

41. The part of an air conditioning system that changes the refrigerant from a low-pressure gas to a high-pressure gas is the...
Evaporator
Have a minimum perimeter of 3' larger than the unit being served
The compressor and condenser connected by a refrigeration line set to the metering device and evaporator
Compressor

42. Which part of the system prevents liquid from entering the compressor...
Evaporator
Must be coiled horizontally and the vapor must flow from top to bottom
Must be located in a conspicuous place to serve as an alarm
The accumulator

43. Quick-connect fittings are commonly used on...
Capillary action
Capillary action
Precharged refrigeration linesets
Condenser

44. If ductwork is located in an attic or crawl space - it must be...
The blower relay coil
Insulated
The accumulator
The contactor coil

45. What type of metering device is used on a 12 SEER split air conditioning system...
The contactor coil
A TXV
To prevent condensation from forming
Metering device

46. The part of an air conditioning system that changes the refrigerant from a low-pressure gas to a high-pressure gas is the...
Compressor
The coil is precharged with nitrogen
Condenser
The compressor and condenser connected by a refrigeration line set to the metering device and evaporator

47. If ductwork is located in an attic or crawl space - it must be...
To prevent condensation from forming
Insulated
The blower relay coil
Precharged refrigeration linesets

48. What is the purpose for insulating a suction line...
Compressor
Refrigerant must be added to the system
Must be coiled horizontally and the vapor must flow from top to bottom
To prevent condensation from forming

49. Before energizing a newly installed system - what test should always be done...
Evaporator
A compression fitting
Check for tight connections at electrical terminals
The suction line must be pitched toward the condensing unit

50. Why is it recommended to add a gravel fill under the pad of a condensing unit...
Compressor
This will prevent settling of the ground - which can cause refrigerant line damage
The receiver
Refrigerant must be added to the system