IDENTIFY TEST PROCESS SYMBOLS AND DIAGRAMS
Ammeter switch
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An OBD-II system interprets a disconnected spark plug as a misfire that could damage the three-way catalyst. The ECM or PCM will most likely trigger the malfunction indicator lamp (MIL) on the _______ trip.
A. third B. fourth C. second D. first
After shutdown of a centrifugal chiller is initiated, the compressor, chilled-water pump, and oil pump stop but the tower fans continue to run. The most likely reason is the _____.
a. stop-to-start timer is activated b. compressor start relay is energized c. condenser water temperature remains high d. recycle shutdown mode has been activated
Which of the following may be used to detect unusual bearing noise during rundown when the motor is powered down?
a. Megger b. Infrared thermometer c. Vibration tester d. Stethoscope
What does a certification done by the Canadian Standards Association (CSA) signify?
A) The equipment meets CSA and CSA America standards. B) The appliance fails to meet U.S. standards. C) The equipment meets ANSI, UL, CSA America, or NSF standards. D) The furnace meets only Canadian standards.