Marine Electrical Systems USCG Question #135 (Set 5)

If coil 'R1-R2-R3' on the transmitter in figure "C" shown in the illustration is turned 30 degrees clockwise, how will the corresponding coils 'R1-R2-R3' on the receivers (indicators) respond? Illustration EL-0092

USCG Exam Illustration EL-0092
USCG Examination Diagram: Illustration EL-0092
Official USCG Answer & Rule Citation

Correct Answer: Option A — torque will cause them to align to the same position

In a synchro transmission system, rotating the transmitter rotor induces corresponding stator voltage changes, generating electromagnetic torque that drives the receiver rotor to align precisely with the new transmitter position.

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