AC Fundamentals, Circuit and Circuit Theory
The square waveform of current has following relation between r.m.s. value and average value.

r.m.s. value is equal to average value
None of these
r.m.s. value of current is greater than average value
r.m.s. value of current is less than average value

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AC Fundamentals, Circuit and Circuit Theory
The phase difference between voltage and current wave through a circuit element is given as 30°. The essential condition is that

Both waves must have same frequency
None of the listed here
Both waves must have identical peak values
Both waves must have zero value at the same time

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AC Fundamentals, Circuit and Circuit Theory
Poor power factor

All of the listed here
Reduces load handling capability of electrical system
Overloads alternators, transformers and distribution lines
Results in more power losses in the electrical system

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AC Fundamentals, Circuit and Circuit Theory
In a R-L-C circuit

Power is consumed in resistance and is equal to IR
Exchange of power takes place between inductor and supply line
All of the listed here
Exchange of power takes place between capacitor and supply line

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