Question 56General Subjects - Assistant Engineer70% to pass
As shown in figure "A" of the illustration, what statement is true concerning the voltage sensing unit? Illustration EL-0066
AI Explanation
The correct answer is B) The voltage sensor delivers a relatively low value of DC signal voltage proportional to the alternator output voltage to the comparator.
The voltage sensing unit is designed to convert the high alternator output voltage (typically 12V or 24V) to a lower DC voltage signal that can be processed by the comparator circuit. This lower DC voltage signal is proportional to the alternator output voltage, allowing the comparator to monitor and regulate the charging system.
The other options are incorrect because: A) the voltage sensor does not deliver an AC signal, C) the voltage sensor does not deliver a single-phase AC signal, and D) the voltage sensor does not deliver a DC signal equal in magnitude to the alternator output voltage, which would be too high for the comparator to process.
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