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The time required for a pulse to decrease from 90 to 10 per cent of its maximum value is called

  • A.Rise time
  • B.Decay time
  • C.Binary level transition period
  • D.Propagation delay

Answer: B

Correct answer: Decay time

Decay time, or fall time, is measured between the 90 per cent and 10 per cent points on the falling edge, mirroring rise time on the leading edge. The 10 and 90 per cent marks are used because the extremes of the transition are hard to locate.

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