Marine Electrical Systems USCG Question #619 (Set 21)

When a resistor is used as a shunt and is connected in parallel with a meter movement coil, what capability does this provide?

Official USCG Answer & Rule Citation

Correct Answer: Option C — an extended meter range

Connecting a low-resistance shunt in parallel with a meter movement allows the majority of high circuit current to bypass the delicate coil, extending the measurable range. This technique is standard in marine switchboard ammeters monitoring heavy generator loads.

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