Marine Electrical Systems USCG Question #470 (Set 16)

As shown in figures "B" and "C" of the illustration, what should be the switch position and which test lead terminal jacks should be used if your intent is to measure DC currents anticipated as high as 200 milliamps? Illustration EL-0047

USCG Exam Illustration EL-0047
USCG Examination Diagram: Illustration EL-0047
Official USCG Answer & Rule Citation

Correct Answer: Option A — switch position "6" and terminal jacks "1 and 4"

Multimeter operation requires selecting the appropriate current range and jack configuration to prevent internal fuse damage. Position 6 corresponds to the milliampere range, while jacks 1 and 4 provide the correct path for low-current DC measurements. Always verify lead placement before energizing circuits to ensure meter protection and accurate readings.

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