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Which component locks the selected gear to the output shaft?

  • A.The selector fork, which engages a groove in the gear itself and holds it against the shoulder on the shaft
  • B.A dog clutch sleeve
  • C.The synchromesh cone, which grips the gear by friction and therefore transmits the drive to the output shaft
  • D.A key

Answer: B

The gears run free on the output shaft until a splined sleeve slides across and engages dog teeth on the gear, locking it to the shaft. The synchroniser matches the speeds first but transmits no drive itself. The selector fork moves the sleeve but does not carry torque. Tracing the requirement back to the physical constraint that produces it makes the answer follow. Checking which component actually carries the load settles most questions of this kind at once.

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