NATE Final Exam -2 Questions and Complete Solutions Graded A+
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Course
Nate commercial
Institution
Nate Commercial
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...
NATE Final Exam
#2 Questions and
Complete Solutions
Graded A+
Denning [Date] [Course title]
,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
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
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
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
A typical heat pump uses a high-pressure control to shut off the compressor if the condensing pressure
becomes excessive. The control uses a switch that makes the compressor contact on a pressure:
A: Rise at the compressor discharge
B: Fall at the compressor discharge
C: Difference between the high and low side
D: Combination of the high and low side - Answer: B
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