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
Time constant of a capacitive circuit

Increase with increase of capacitance and increase of resistance
Increases with the decrease of capacitance and increase of resistance
Increases with the decrease of capacitance and decrease of resistance
Increases with the increase of capacitance and decrease of resistance

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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

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

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