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A periodic voltage has following value 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. Then rms value of the waveform is

31 V
32 V
insufficient data
none of these

Correct Answer: 31 V

Explanation:

RMS value = 965 = 31.064 Volt.

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