Machine-translated by Google. Questions are authored in English.
Top

Discussion

Which ratio results from holding the annulus and driving the sun?

  • A.A reverse ratio with the carrier as output, because the planets reverse the direction of rotation between the gears
  • B.A reduction with the carrier as output
  • C.An overdrive with the carrier as output, since the planets turn faster than the sun gear that is driving them
  • D.Direct drive

Answer: B

Driving the sun with the annulus held makes the planets walk around inside the annulus, carrying the carrier round more slowly than the sun in a reduction. Driving the carrier and taking the output from the sun gives the corresponding overdrive. Reverse requires the carrier to be held instead. The order in which the effects act is what decides the outcome, so it is worth establishing first. Reading the definition literally, rather than recalling a summary, avoids the usual confusion.

No comment is present. Be the first to comment.
Loading…

Post your comment

Please log in or register to post a comment.