NATE Final Exam #2 2025 Questions
and Answers
A condensing unit should be mounted on a slab that is level to:
A: Allow any accumulated water to evenly run out of the cabinet
B: Increase airflow through the fin area
C: Prevent the unit from tipping over
D: Make certain any top discharge air blows straight up - ANSWER✔✔-A
A simple time-activated switch is an example of a control that does not use:
A: Feedback
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,B: Electronics
C: Calibration
D: Manual adjustment - ANSWER✔✔-A
Which of the following systems would typically require a blower with a 2000 cfm output?
A: 2-ton ac system
B: 3-ton ac system
C: 5-ton ac system
D: 7.5-ton ac system - ANSWER✔✔-C
A typical induced-draft furnace uses a blower-off delay in the cooling mode to:
a. Increase the efficiency of the system
b. Air wash the coil on shutdown
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,c. Minimize dehumidification at the coil
d. Prevent blowing moisture off the coil on shut off - ANSWER✔✔-A
Which of the following would a technician use to check the operating sequence of an air
conditioning system?
A: Schematic
B: Warranty Information
C: Furnace manual
D: All of the above - ANSWER✔✔-A
Rafters in typical residential construction are how far apart?
a. 12 inches
b. 14 inches
c. 16 inches
d. 18 inches - ANSWER✔✔-C
FOR STUDY PURPOSES ONLY COPYRIGHT © 2025 ALL RIGHTS RESERVED 3
, Which of the following components is energized first after an intermittent ignition gas furnace calls
for heat?
A: Induced draft motor
B: Pilot valve
C: Blower motor
D: Gas valve - ANSWER✔✔-A
To have a system automatically switch to heating or cooling as the load changes, the thermostat:
A: System switch should be in auto
B: System switch should be in off
C: System switch should be on
D: Fan switch should be in auto - ANSWER✔✔-A
FOR STUDY PURPOSES ONLY COPYRIGHT © 2025 ALL RIGHTS RESERVED 4
and Answers
A condensing unit should be mounted on a slab that is level to:
A: Allow any accumulated water to evenly run out of the cabinet
B: Increase airflow through the fin area
C: Prevent the unit from tipping over
D: Make certain any top discharge air blows straight up - ANSWER✔✔-A
A simple time-activated switch is an example of a control that does not use:
A: Feedback
FOR STUDY PURPOSES ONLY COPYRIGHT © 2025 ALL RIGHTS RESERVED 1
,B: Electronics
C: Calibration
D: Manual adjustment - ANSWER✔✔-A
Which of the following systems would typically require a blower with a 2000 cfm output?
A: 2-ton ac system
B: 3-ton ac system
C: 5-ton ac system
D: 7.5-ton ac system - ANSWER✔✔-C
A typical induced-draft furnace uses a blower-off delay in the cooling mode to:
a. Increase the efficiency of the system
b. Air wash the coil on shutdown
FOR STUDY PURPOSES ONLY COPYRIGHT © 2025 ALL RIGHTS RESERVED 2
,c. Minimize dehumidification at the coil
d. Prevent blowing moisture off the coil on shut off - ANSWER✔✔-A
Which of the following would a technician use to check the operating sequence of an air
conditioning system?
A: Schematic
B: Warranty Information
C: Furnace manual
D: All of the above - ANSWER✔✔-A
Rafters in typical residential construction are how far apart?
a. 12 inches
b. 14 inches
c. 16 inches
d. 18 inches - ANSWER✔✔-C
FOR STUDY PURPOSES ONLY COPYRIGHT © 2025 ALL RIGHTS RESERVED 3
, Which of the following components is energized first after an intermittent ignition gas furnace calls
for heat?
A: Induced draft motor
B: Pilot valve
C: Blower motor
D: Gas valve - ANSWER✔✔-A
To have a system automatically switch to heating or cooling as the load changes, the thermostat:
A: System switch should be in auto
B: System switch should be in off
C: System switch should be on
D: Fan switch should be in auto - ANSWER✔✔-A
FOR STUDY PURPOSES ONLY COPYRIGHT © 2025 ALL RIGHTS RESERVED 4
