Nate Ac Service Certification Exam Questions (99 Terms) With Verified Definitions Updated 2024

Where should a technician check the voltage to an energized compressor? A. At the main electrical panel B. At the line side of the compressor contactor C. At the load side of the compressor contactor D. At the unit disconnect {Ans: *C}What is the maximum acceptable supply voltage tolerance for a 120 V circuit? A. +/-3% B. +/-5% C. +/-10% D. +10% / -15% {Ans: B. +/-5%}A residential supply diffuser that is noisy because of a loose vane is best serviced by: A. reducing the air volume. B. changing the fan speed. C. replacing the noisy vane. D. replacing the diffuser. {Ans: D. replacing the diffuser.}What does a test of the compressor oil after a burnout indicate? A. Acidity B. Smoke C. Viscosity D. Alkalinity {Ans: A. Acidity}How should a mercury bulb thermostat be disposed of? A. Return to the original equipment manufacturer B. Return to approved recycling facility C. Return to homeowner D. Dispose in a sealed container {Ans: B. Return to approved recycling facility}Electronic air cleaners can operate with internal voltages as high as: A. 120 volts. B. 240 volts. C. 500 volts. D. 5000 volts. {Ans: D. 5000 volts.}What steps are