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Alternating Current and Voltage

Q1:

A sine wave with an rms value of 12 V is riding on a dc level of 18 V. The maximum value of the resulting waveform is

A 6 V

B 30 V

C 35 V

D 0 V

ANS:C - 35 V

Max. V.value= 2 * 0.707 * 12 = 16.968.
You multiply by two because one cycle has two half waves
Max V.value + DC level value = 16.968 + 18 =34.968.



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