USCG Exam PracticeMotors and generators
For an AC generator rated at 50 volts or more installed under 46 CFR §183.320, which instruments are required to be provided?
- A. A voltmeter and an ammeter only
- ✓ A voltmeter, an ammeter, and a means for measuring frequencyCorrect
- C. A wattmeter and a power factor meter
- D. An ammeter and a means for measuring frequency only
Why B is correct
46 CFR §183.320(c) requires a voltmeter and an ammeter for any generator rated at 50 volts or more, and additionally requires a means for measuring frequency for each alternating current generator.
Cited:46 CFR §183.320