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A synchro transmitter and receiver pair is used to

  • A.transmit shaft angle electrically over a distance
  • B.transmit mechanical power electrically over a distance
  • C.measure the speed of a rotating shaft accurately
  • D.convert alternating current into direct current

Answer: A

Energising the transmitter's rotor induces voltages in its three stator windings that depend on its angle, and connecting them to an identical receiver makes its rotor take up the same position. It is an electrical shaft rather than a measurement.

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