USCG Exam PracticeAC circuits and theory
A shipboard 440 V (RMS) AC distribution system has an actual peak voltage of approximately how many volts?
- A. 311 V
- B. 440 V
- ✓ 622 VCorrect
- D. 880 V
Why C is correct
NEETS Mod. 2 §1-2 states peak = 1.414 × RMS. Thus 1.414 × 440 V ≈ 622 V. This distinction matters when selecting insulation and component voltage ratings. Option A is the peak of a 220 V RMS system. Option D is simply double the RMS value, which is incorrect.
Cited:NEETS Mod. 2 §1-2