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Which capability does a controlled alternator give the vehicle?

  • A.Nothing new
  • B.Protection against overcharging, which is provided by the control unit monitoring the state of the battery constantly
  • C.Varying output to suit fuel saving strategies
  • D.A higher maximum output, which is achieved by permitting the regulator to exceed the normal voltage setting

Answer: C

The controller can charge hard on overrun and back off under acceleration, which saves fuel measurably. Overcharge protection genuinely is improved as well, which makes the last option a real secondary benefit of the same architecture. Checking which component actually carries the load settles most questions of this kind at once. Working the distinction through on a single concrete case fixes it more firmly than any rule of thumb. Naming the cost of a choice alongside its benefit is what turns a fact into a design decision.

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