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Exam Questions Papers - Engineering

Q1:

A periodic voltage has following values for equal time intervals changing suddenly from one value to next : 0, 5, 10, 20, 50, 60, 50, 20, 10, 5, 0, - 5, - 10 etc.
RMS value of the waveform is :

A 31 v

B 32 v

C insufficient data

D none of these

ANS:A - 31 v

Mean value of V2 = = 965 V ∴ rms value = ≈ 31 V.