25 Multiple choice questions

1. Conditioned air should have a different temp between 16 & ....
   1. 50 feet
   2. 30 inches
   3. 22 degrees
   4. 12 inches
2. What happens if the suction line is uninsulated?
   1. If the right size pipe is used
   2. A window is cracked open
   3. Refrigerant could super heat and damage the compressor
   4. Heat exchanger
3. Which refrigerant lines should not be insulated?
   1. Heat exchanger
   2. 22 degrees
   3. Larger ducts
   4. The larger lines
4. What does a heat pump have that a split A/C unit does not have?
   1. Strip heaters
   2. Evaporator coils
   3. Accumulator and reversing valve
   4. 1/8" per foot
5. Horizontal condensation tubes must have a slope of at least...
   1. Evaporator coils
   2. 50 feet
   3. Duct leakage
   4. 1/8" per foot
6. The minimum distance of the condenser to the wall is.....
   1. 30 inches
   2. 6 feet
   3. 22 degrees
   4. 12 inches
7. An A/C unit in a transom window above a door is required to have an.....
   1. 12 inches
   2. 30 inches
   3. Additional switch
   4. Drain trap
8. In normal operation the air above a condensing unit should be....
   1. Warmer
   2. Low
   3. 500
   4. Warm
9. In a split system A/C unit what portion is on the indoors
   1. The larger lines
   2. Larger ducts
   3. Evaporator coils
   4. Revers direction
10. The removable side of the condenser requires how much working space?
    1. 50 feet
    2. 12 inches
    3. 22 degrees
    4. 30 inches
11. A 240-volt through wall/window A/C cord may not be longer than....
    1. Ice up
    2. Warmer
    3. 50 feet
    4. 6 feet
12. When operating normally a heat pump outdoor coil may occasionally.....
    1. Warm
    2. 500
    3. Ice up
    4. Warmer
13. If you turn up a heat pump thermostat the ________. __________ will probably also turn on
    1. 30 inches
    2. Strip heaters
    3. 22 degrees
    4. 12 inches
14. The electrical disconnect for an outside A/C unit must be in line of sight and within...
    1. 500
    2. 30 inches
    3. 50 feet
    4. 6 feet
15. Evaporative coolers work best when....
    1. Ice up
    2. Duct leakage
    3. Drain trap
    4. A window is cracked open
16. When can condensation drains be joined together?
    1. If the right size pipe is used
    2. Revers direction
    3. The larger lines
    4. Strip heaters
17. A temperature change in the conditioned air that is too low may indicate....
    1. Ice up
    2. 50 feet
    3. Duct leakage
    4. Heat exchanger
18. A heat pump should supply air around 120. Anything lower ussually means the outside temp is too
    1. Warm
    2. 500
    3. Low
    4. 6 feet
19. In a heat pump the liquid in the small line will....
    1. Evaporator coils
    2. Strip heaters
    3. Revers direction
    4. Larger ducts
20. Compared to the ambient air the small liquid line should be...
    1. Low
    2. Warm
    3. Warmer
    4. 6 feet
21. The tonnage of the compressing unit is ussually found as a number divisible by twelve in the
    1. Ice up
    2. 12 inches
    3. Warmer
    4. Model number
22. The evaporative coil should be downstream from the....
    1. 12 inches
    2. Duct leakage
    3. 30 inches
    4. Heat exchanger
23. In a humid climate one ton of A/C is good for how many square feet?
    1. 500
    2. Warm
    3. 50 feet
    4. Low
24. Condensation drain lines can drain into fixture tail pieces upstream from a...
    1. 12 inches
    2. Warmer
    3. Warm
    4. Drain trap
25. A heat only system converted to have A/C may need....
    1. Warmer
    2. The larger lines
    3. Larger ducts
    4. Ice up