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Discussion

An LVDT is used to measure displacement. The LVDT feeds a Voltmeter of 0-5 V range through a 250 gain amplifier. For a displacement 0.5 mm the output of LVDT is 2 mV. The sensitivity of instrument is

  • A.0.1 V/mm
  • B.0.5 V/mm
  • C.1 V/mm
  • D.5 V/mm

Answer: C

Final output = 2 x 10-3 x 250 = 0.5 V.

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