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The instrument used to record strong ground motion for engineering purposes is the

  • A.long-period displacement seismograph
  • B.microbarograph
  • C.accelerograph
  • D.Wood-Anderson torsion seismometer

Answer: C

It records acceleration directly, stays within range close to a large earthquake, and is usually triggered by the shaking itself so that it does not run continuously. Sensitive seismographs designed for distant small events saturate at short range.

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