When testing an alternator rotor, if an ohmmeter shows zero ohms ...

[sarasara]

Question 1

What test is being performed in this illustration (engine running)?



◦ AC ripple voltage test
◦ Alternator voltage output test
◦ Charging system current test
◦ Diode test

Question 2

When testing an alternator rotor, if an ohmmeter shows zero ohms with one meter lead attached to the slip rings and the other meter lead touching the rotor shaft, the rotor is ________.
◦ OK (normal)
◦ Defective (shorted-to-ground)
◦ Defective (shorted-to-voltage)
◦ OK (rotor windings are open)

[Athena23]

Answer 1

AC ripple voltage test

Answer 2

Defective (shorted-to-ground)

[sarasara]

Wow, this really help

[olderstudent]

Thanks for the timely response, appreciate it