Measurements and Instrumentation - Engineering

Q1:

A 300 V voltmeter has an accuracy of ± 2% of full scale deflection. When the reading is 222 V, the actual voltage

A lies between 217.56 and 226.44 V

B lies between 217.4 and 226.6 V

C lies between 216 and 228 V

D is exact 222 V

ANS:C - lies between 216 and 228 V

Error = ± 6 V. Therefore, the actual value would be between 222 ± 6 V.