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. Where does the refrigerant change from a high-pressure liquid to a low-pressure liquid...
Metering device
Metering device (restrictor)
Capillary action
The compressor and condenser connected by a refrigeration line set to the metering device and evaporator

2. What is the 'W' terminal used for on the thermostat...
Metering device
Evaporator
The receiver
The heating control circuit

3. What type of metering device is used on a 12 SEER split air conditioning system...
The temperature increases
The contactor coil
A TXV
208-volt/240-volt single-phase power supply

4. What is the purpose for insulating a suction line...
The coil is precharged with nitrogen
Insulated
To prevent condensation from forming
Precharged refrigeration linesets

5. What is the 'G' terminal used for on the thermostat...
Insulated
The power from the transformer
A TXV
The blower relay coil

6. To ensure proper oil return to the compressor - a coiled refrigeration lineset...
Must be coiled horizontally and the vapor must flow from top to bottom
The lines must be covered by PVC to prevent contact with the masonry material
The temperature increases
The blower relay coil

7. Which part of the system stores refrigerant until it is needed in the evaporator...
The receiver
To prevent condensation from forming
The coil is precharged with nitrogen
Refrigerant must be added to the system

8. What type of metering device is used on a 12 SEER split air conditioning system...
Condenser
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
A TXV

9. The part of an air conditioning system that changes the refrigerant from a low-pressure liquid to a low-pressure gas is the...
The blower relay coil
Evaporator
This will prevent settling of the ground - which can cause refrigerant line damage
Condenser

10. A room thermostat should be mounted...
Insulated
Near a return-air grill
A compression fitting
The lines must be covered by PVC to prevent contact with the masonry material

11. The part of an air conditioning system that changes the refrigerant from a high-pressure gas to a high-pressure liquid is the...
Metering device
24 volts
Condenser
A compression fitting

12. Where does the refrigerant change from a high-pressure liquid to a low-pressure liquid...
Metering device (restrictor)
This will prevent settling of the ground - which can cause refrigerant line damage
Must be located in a conspicuous place to serve as an alarm
Compressor

13. Where does the refrigerant change from a high-pressure gas to a high-pressure liquid...
The heating control circuit
Condenser
Compressor
208-volt/240-volt single-phase power supply

14. When installing an evaporator coil - before soldering - the end of the evaporator lines must be opened to the atmosphere because...
Precharged refrigeration linesets
The blower relay coil
208-volt/240-volt single-phase power supply
The coil is precharged with nitrogen

15. Before energizing a newly installed system - what test should always be done...
Must be located in a conspicuous place to serve as an alarm
Check for tight connections at electrical terminals
Metering device (restrictor)
The receiver

16. The part of an air conditioning system that changes the refrigerant from a high-pressure liquid to a low-pressure liquid is the...
The coil is precharged with nitrogen
Insulated
Metering device
The cooling contactor coil

17. What is the purpose for insulating a suction line...
Must be located in a conspicuous place to serve as an alarm
The cooling contactor coil
Compressor
To prevent condensation from forming

18. Where does the refrigerant change from a low-pressure gas to a high-pressure gas...
Refrigerant must be added to the system
Metering device (restrictor)
Metering device (restrictor)
Compressor

19. Where does the refrigerant change from a low-pressure liquid to a low-pressure gas...
Insulated
Compressor
Evaporator
The power from the transformer

20. When soldering a copper connection and solder is drawn into the joint - This is commonly called...
Compressor
The power from the transformer
Must be located in a conspicuous place to serve as an alarm
Capillary action

21. An auxiliary drain pan must...

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

22. What is the secondary voltage on a step-down control transformer for a residential furnace...
24 volts
Compressor
Precharged refrigeration linesets
The receiver

23. What is the 'are' terminal used for on the thermostat...
The power from the transformer
Evaporator
The cooling contactor coil
Metering device (restrictor)

24. A secondary drain line...
Must be located in a conspicuous place to serve as an alarm
Have a minimum perimeter of 3' larger than the unit being served
A compression fitting
The receiver

25. What is the secondary voltage on a step-down control transformer for a residential furnace...
The receiver
Must be coiled horizontally and the vapor must flow from top to bottom
Near a return-air grill
24 volts

26. The part of an air conditioning system that changes the refrigerant from a high-pressure liquid to a low-pressure liquid is the...
Metering device
Must be coiled horizontally and the vapor must flow from top to bottom
To prevent condensation from forming
208-volt/240-volt single-phase power supply

27. What is the 'are' terminal used for on the thermostat...
Condenser
The power from the transformer
Evaporator
Metering device

28. Where does the refrigerant change from a low-pressure gas to a high-pressure gas...
Compressor
208-volt/240-volt single-phase power supply
Check for tight connections at electrical terminals
208-volt/240-volt single-phase power supply

29. Residential split-system outdoor condensing units are commonly wired with a...
Check for tight connections at electrical terminals
Precharged refrigeration linesets
208-volt/240-volt single-phase power supply
The coil is precharged with nitrogen

30. The part of an air conditioning system that changes the refrigerant from a low-pressure liquid to a low-pressure gas is the...
24 volts
Evaporator
Must be coiled horizontally and the vapor must flow from top to bottom
A compression fitting

31. If ductwork is located in an attic or crawl space - it must be...
208-volt/240-volt single-phase power supply
Insulated
The receiver
The coil is precharged with nitrogen

32. When installing a refrigeration line set through a masonry wall
208-volt/240-volt single-phase power supply
A TXV
Insulated
The lines must be covered by PVC to prevent contact with the masonry material

33. A split-system air conditioning unit has...
24 volts
The compressor and condenser connected by a refrigeration line set to the metering device and evaporator
The contactor coil
The power from the transformer

34. To ensure proper oil return to the compressor - when installing a refrigeration line set...
The heating control circuit
The cooling contactor coil
Compressor
The suction line must be pitched toward the condensing unit

35. Before energizing a newly installed system - what test should always be done...
Compressor
The heating control circuit
The receiver
Check for tight connections at electrical terminals

36. To ensure proper oil return to the compressor - a coiled refrigeration lineset...
A compression fitting
Evaporator
The accumulator
Must be coiled horizontally and the vapor must flow from top to bottom

37. What type of fitting uses an O-ring to help seal its joint...
The receiver
The accumulator
The lines must be covered by PVC to prevent contact with the masonry material
A compression fitting

38. When installing a refrigeration line set through a masonry wall
The lines must be covered by PVC to prevent contact with the masonry material
The blower relay coil
The suction line must be pitched toward the condensing unit
Check for tight connections at electrical terminals

39. Which part of the system prevents liquid from entering the compressor...
24 volts
The receiver
The accumulator
Precharged refrigeration linesets

40. Where does the refrigerant change from a low-pressure liquid to a low-pressure gas...
Metering device
The blower relay coil
Evaporator
The coil is precharged with nitrogen

41. Why is it recommended to add a gravel fill under the pad of a condensing unit...
Refrigerant must be added to the system
The lines must be covered by PVC to prevent contact with the masonry material
This will prevent settling of the ground - which can cause refrigerant line damage
The heating control circuit

42. To ensure proper oil return to the compressor - when installing a refrigeration line set...
Compressor
The suction line must be pitched toward the condensing unit
Refrigerant must be added to the system
Condenser

43. Which part of the system stores refrigerant until it is needed in the evaporator...
The suction line must be pitched toward the condensing unit
Condenser
The receiver
Evaporator

44. What is the 'Y' terminal used for on the thermostat...
Precharged refrigeration linesets
The cooling contactor coil
A compression fitting
The coil is precharged with nitrogen

45. What must be done to the system when a condensing unit is precharged for 25' of refrigerant line and uses 32' of refrigerant line...
24 volts
Refrigerant must be added to the system
The blower relay coil
Capillary action

46. What type of fitting uses an O-ring to help seal its joint...
A compression fitting
The accumulator
The suction line must be pitched toward the condensing unit
The compressor and condenser connected by a refrigeration line set to the metering device and evaporator

47. What is the 'W' terminal used for on the thermostat...
The heating control circuit
Insulated
This will prevent settling of the ground - which can cause refrigerant line damage
Evaporator

48. Quick-connect fittings are commonly used on...
The coil is precharged with nitrogen
The power from the transformer
The contactor coil
Precharged refrigeration linesets

49. What is the 'Y' terminal used for on the thermostat...
The cooling contactor coil
The temperature increases
The coil is precharged with nitrogen
To prevent condensation from forming

50. Where does the refrigerant change from a high-pressure gas to a high-pressure liquid...
The compressor and condenser connected by a refrigeration line set to the metering device and evaporator
Condenser
The receiver
Capillary action