Lehman Engineering Power Quiz
HARMONICS "TRUE OR FALSE"

Question #1:
Harmonic problems begin with non linear loads.

TRUE or FALSE?

Question #2:
Harmonic Voltages at the service entrance are caused due to poor utility control of supply voltage (i.e. the problem is generated by the utility company).

TRUE or FALSE?

Question #3:
Harmonic currents cause transformers to overheat due to the harmonics' higher frequency magnetic flux being induced into the iron core of a transformer.

In other words, are the hysteresis core losses in a transformer greater, since the magnetic flux (produced by a harmonic current flowing through the transformer winding) is at a higher harmonic frequency.

TRUE or FALSE?