As shown in figure "A" of the illustration, what statement is true concerning the voltage sensing unit? Illustration EL-0066

Correct Answer: Option B — The voltage sensor delivers a relatively low value of DC signal voltage proportional to the alternator output voltage to the comparator.

Voltage sensing units in alternator control circuits function by rectifying and scaling the AC output. They provide a stable, low-voltage DC signal to the comparator, which is directly proportional to the alternator's terminal voltage, allowing the automatic voltage regulator to maintain precise output levels under varying load conditions.