AC Fundamentals, Circuit and Circuit Theory
In series resonant circuit, increasing inductance to its twice value and reducing capacitance to its half value

Will change the resonance frequency
Will change the maximum value of current at resonance
Will change the impedance at resonance frequency
Will increase the selectivity of the circuit

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

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

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

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