6A4 - Ship's power is generated as 3-phase and is ungrounded. On a delta-wound transformer with 120 VAC line-to-line secondary, what is the voltmeter reading from line to ground:

  • Correct answer

    D.Any of the above

  • A.Approx 67 volts for a normal balanced system with no faults

  • B.0 VAC for a system with that phase faulted to ground

  • C.120 VAC when another phase is faulted to ground

This question is one of 100 in FCC Radiotelegraph Element 6 2014. Test yourself on all of them.

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