The three basic methods of sensing ground faults are ground-return, residual, and _____.

a. inductive heating
b. repeating
c. zero sequence
d. saturation


c. zero sequence

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? Identify and state the historical significance of William Henry Harrison.

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Technician A says diodes are used to rectify the voltage produced from an AC generator. Technician B says a zener diode protects circuit components from voltage spikes. Who is correct?

A. Technician A only B. Technician B only C. both A and B D. neither A nor B

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