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The counterweight of a lift is sized to balance

  • A.the car plus about half its rated load
  • B.the car alone with no allowance for its load
  • C.twice the car plus its full rated load
  • D.nothing at all

Answer: A

Balancing at half load makes the drive's duty roughly symmetrical between a full car going up and an empty one coming down, which halves the machine rating needed. The drive still has to work in all four quadrants as the load varies.

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