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Measurements and Instrumentation - Engineering

Q1:

A full wave rectifier type meter is used to measure the wave shape shown in figure. The voltmeter is calibrated to read rms value of sine wave. The reading of voltmeter will be

A

B

C 100 V

D 111 V

ANS:D - 111 V

Peak value of sine wave = 100 x 1.11 = 111 V.