AC Fundamentals, Circuit and Circuit Theory
Time constant of an inductive circuit

Increases with increase of inductance and decrease of resistance
Increases with the decrease of inductance and decrease of resistance
Increases with the increase of inductance and the increase of resistance
Increases with decrease of inductance and increase of resistance

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AC Fundamentals, Circuit and Circuit Theory
Pure inductive circuit

None of the listed here
Consumes some power on average
Does not take power at all from a line
Takes power from the line during some part of the cycle and then returns back to it during other part of the cycle

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AC Fundamentals, Circuit and Circuit Theory
A phasor is

An instrument used for measuring phases of an unbalanced 3-phase load
A line which represents the magnitude and phase of an alternating quantity
A line representing the magnitude and direction of an alternating quantity
A colored tag or band for distinction between different phases of a 3-phase supply

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AC Fundamentals, Circuit and Circuit Theory
Which of the following refers to a parallel circuit?

The current through any one element is less than the source current
The voltage across element is in proportion to it's resistance value
The current through each element is same
The equivalent resistance is greater than any one of the resistors

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