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Which of the following steps should be the first course of action when working on a faulty transformer?
Normal power is restored after a brief power outage. What would cause a generator to continue to run after is has cooled down?
Which of the following troubleshooting procedures should be followed when determining a short in a motor winding?
The patient wing air handler fan motor is tripping the overcurrent protection device (OCPD). The amperage measurement is higher than normal and the motor is overheating. Which of the following is most likely causing this problem?
Which of the following will result in a variable frequency drive (VFD) becoming overheated?
Which of the following will cause a contactor to hum or chatter?
Which of the following would cause a single phase induction motor with a capacitor start to continue running after power is disconnected?
Which of the following would cause a compressor motor to draw excessive current?