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. Before energizing a newly installed system - what test should always be done...
Refrigerant must be added to the system
Precharged refrigeration linesets
Check for tight connections at electrical terminals
The contactor coil

2. A split-system air conditioning unit has...
A compression fitting
The accumulator
The compressor and condenser connected by a refrigeration line set to the metering device and evaporator
Condenser

3. What is the purpose for insulating a suction line...
Refrigerant must be added to the system
To prevent condensation from forming
Have a minimum perimeter of 3' larger than the unit being served
Metering device (restrictor)

4. Where does the refrigerant change from a low-pressure liquid to a low-pressure gas...
Evaporator
The cooling contactor coil
The power from the transformer
The accumulator

5. Which part of the system prevents liquid from entering the compressor...
208-volt/240-volt single-phase power supply
A TXV
The accumulator
24 volts

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
Must be located in a conspicuous place to serve as an alarm
The compressor and condenser connected by a refrigeration line set to the metering device and evaporator
Evaporator

7. The part of an air conditioning system that changes the refrigerant from a high-pressure gas to a high-pressure liquid is the...
Precharged refrigeration linesets
The lines must be covered by PVC to prevent contact with the masonry material
Condenser
Check for tight connections at electrical terminals

8. Where does the refrigerant change from a high-pressure liquid to a low-pressure liquid...
A TXV
Condenser
Metering device (restrictor)
Must be located in a conspicuous place to serve as an alarm

9. To ensure proper oil return to the compressor - a coiled refrigeration lineset...
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
Precharged refrigeration linesets

10. A room thermostat should be mounted...
The cooling contactor coil
Metering device (restrictor)
Near a return-air grill
Must be located in a conspicuous place to serve as an alarm

11. The part of an air conditioning system that changes the refrigerant from a high-pressure gas to a high-pressure liquid is the...
24 volts
Check for tight connections at electrical terminals
To prevent condensation from forming
Condenser

12. What is the 'are' terminal used for on the thermostat...
Check for tight connections at electrical terminals
Evaporator
Compressor
The power from the transformer

13. A room thermostat should be mounted...
Precharged refrigeration linesets
Near a return-air grill
Compressor
Precharged refrigeration linesets

14. When soldering a copper connection and solder is drawn into the joint - This is commonly called...
Must be coiled horizontally and the vapor must flow from top to bottom
The accumulator
Capillary action
Must be located in a conspicuous place to serve as an alarm

15. What is the 'W' terminal used for on the thermostat...
Metering device
Must be coiled horizontally and the vapor must flow from top to bottom
Metering device
The heating control circuit

16. A normally closed float switch that is connected to an auxiliary drain pan should be wired to control...
The contactor coil
The suction line must be pitched toward the condensing unit
The blower relay coil
208-volt/240-volt single-phase power supply

17. An auxiliary drain pan must...

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

18. Quick-connect fittings are commonly used on...
Near a return-air grill
To prevent condensation from forming
Precharged refrigeration linesets
The blower relay coil

19. Where does the refrigerant change from a low-pressure gas to a high-pressure gas...
Compressor
The blower relay coil
The coil is precharged with nitrogen
Evaporator

20. What is the 'G' terminal used for on the thermostat...
The cooling contactor coil
Compressor
A compression fitting
The blower relay coil

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

22. Which part of the system prevents liquid from entering the compressor...
The accumulator
The blower relay coil
Metering device
This will prevent settling of the ground - which can cause refrigerant line damage

23. What must be done to the system when a condensing unit is precharged for 25' of refrigerant line and uses 32' of refrigerant line...
This will prevent settling of the ground - which can cause refrigerant line damage
The cooling contactor coil
Capillary action
Refrigerant must be added to the system

24. When installing a refrigeration line set through a masonry wall
The heating control circuit
The contactor coil
To prevent condensation from forming
The lines must be covered by PVC to prevent contact with the masonry material

25. What is the 'G' terminal used for on the thermostat...
Have a minimum perimeter of 3' larger than the unit being served
Near a return-air grill
The blower relay coil
The contactor coil

26. What type of fitting uses an O-ring to help seal its joint...
Must be coiled horizontally and the vapor must flow from top to bottom
This will prevent settling of the ground - which can cause refrigerant line damage
Condenser
A compression fitting

27. The part of an air conditioning system that changes the refrigerant from a low-pressure liquid to a low-pressure gas is the...
Evaporator
The coil is precharged with nitrogen
The heating control circuit
The temperature increases

28. In a sealed system - as the pressure increases...
The contactor coil
The accumulator
The lines must be covered by PVC to prevent contact with the masonry material
The temperature increases

29. What type of fitting uses an O-ring to help seal its joint...
The receiver
A compression fitting
The contactor coil
Must be located in a conspicuous place to serve as an alarm

30. To ensure proper oil return to the compressor - when installing a refrigeration line set...
Check for tight connections at electrical terminals
The suction line must be pitched toward the condensing unit
Condenser
The temperature increases

31. Before energizing a newly installed system - what test should always be done...
Check for tight connections at electrical terminals
Must be located in a conspicuous place to serve as an alarm
Capillary action
Compressor

32. If ductwork is located in an attic or crawl space - it must be...
Have a minimum perimeter of 3' larger than the unit being served
The coil is precharged with nitrogen
24 volts
Insulated

33. What must be done to the system when a condensing unit is precharged for 25' of refrigerant line and uses 32' of refrigerant line...
Insulated
Refrigerant must be added to the system
A compression fitting
Check for tight connections at electrical terminals

34. A normally closed float switch that is connected to an auxiliary drain pan should be wired to control...
To prevent condensation from forming
Refrigerant must be added to the system
The contactor coil
The cooling contactor coil

35. When installing an evaporator coil - before soldering - the end of the evaporator lines must be opened to the atmosphere because...
Have a minimum perimeter of 3' larger than the unit being served
208-volt/240-volt single-phase power supply
The coil is precharged with nitrogen
The heating control circuit

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

37. Which part of the system stores refrigerant until it is needed in the evaporator...
Capillary action
The coil is precharged with nitrogen
Refrigerant must be added to the system
The receiver

38. The part of an air conditioning system that changes the refrigerant from a low-pressure gas to a high-pressure gas is the...
208-volt/240-volt single-phase power supply
Compressor
To prevent condensation from forming
The cooling contactor coil

39. If ductwork is located in an attic or crawl space - it must be...
Precharged refrigeration linesets
Capillary action
Insulated
A compression fitting

40. When installing a refrigeration line set through a masonry wall
The receiver
Refrigerant must be added to the system
Compressor
The lines must be covered by PVC to prevent contact with the masonry material

41. What is the 'Y' terminal used for on the thermostat...
The accumulator
Capillary action
The cooling contactor coil
Evaporator

42. Where does the refrigerant change from a low-pressure liquid to a low-pressure gas...
The compressor and condenser connected by a refrigeration line set to the metering device and evaporator
Evaporator
A compression fitting
The temperature increases

43. A secondary drain line...
The temperature increases
Must be located in a conspicuous place to serve as an alarm
Condenser
The contactor coil

44. What is the 'W' terminal used for on the thermostat...
A compression fitting
Condenser
The heating control circuit
The receiver

45. What is the secondary voltage on a step-down control transformer for a residential furnace...
The cooling contactor coil
24 volts
Check for tight connections at electrical terminals
Evaporator

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

47. Residential split-system outdoor condensing units are commonly wired with a...
208-volt/240-volt single-phase power supply
Must be located in a conspicuous place to serve as an alarm
Capillary action
The contactor coil

48. Where does the refrigerant change from a high-pressure gas to a high-pressure liquid...
The blower relay coil
To prevent condensation from forming
Condenser
Precharged refrigeration linesets

49. Where does the refrigerant change from a high-pressure liquid to a low-pressure liquid...
Metering device (restrictor)
208-volt/240-volt single-phase power supply
Must be located in a conspicuous place to serve as an alarm
The cooling contactor coil

50. The part of an air conditioning system that changes the refrigerant from a low-pressure gas to a high-pressure gas is the...
Compressor
Evaporator
Metering device (restrictor)
The contactor coil