The most common concern with using VFDs is:
A) Hertz modulation. B) Harmonic distortion.
C) Carrier frequency. D) Voltage fluctuation.
Question 2
In order to be injured by an arc flash:
A) You must physically contact a live circuit.
B) You only need to be near the point of the arc flash.
C) You must ground yourself.
D) You must contact a live circuit and ground.