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Which measurement checks a starter armature for a short circuit?

  • A.A growler test
  • B.A resistance measurement between the segments, which reveals any winding that has shorted to the shaft of the armature
  • C.A visual inspection
  • D.A continuity test to the shaft, which reveals whether the insulation between the winding and the core has failed

Answer: A

A growler induces current in the armature and a steel blade vibrates over a shorted coil. Testing to the shaft finds an earth fault rather than a short between turns, which makes the last option a real but different test. Reading the definition literally, rather than recalling a summary, avoids the usual confusion. Checking which component actually carries the load settles most questions of this kind at once. Reading the definition literally, rather than recalling a formula, is the reliable route through questions of this shape.

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