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NATE Final Exam -2 Questions and Complete Solutions Graded A+
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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...

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  • August 14, 2024
  • 36
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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  • nate final exam 2 questions and complete solution

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  • Nate commercial
  • Nate commercial

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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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