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Which sensing arrangement improves charging accuracy?

  • A.Sensing at the fuse box, which represents the average of the voltages seen by the loads within the vehicle
  • B.A separate sense wire connected at the battery
  • C.Sensing at the alternator output terminal, which is closest to the source and therefore gives the most accurate reading
  • D.No sensing

Answer: B

A remote sense wire lets the regulator compensate for the drop along the charging cable and hold the correct voltage at the battery. Sensing at the machine ignores that drop entirely. Fuse box sensing is genuinely used on some vehicles. Naming the cost of a choice alongside its benefit is what turns a fact into a design decision. The shared behaviour explains why these belong together and the differences explain why both exist.

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