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Measurements and Instrumentation

Q1:

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

ANS:C - 1 V/mm

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



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