AC Fundamental Interview Question Answer - 3

Important Question of AC Fundamentals

In this post, some of the important question of resonance, definition of impedance, admittance, inductive susceptance, inductive reactance, parallel resonance, impedance of series RL circuit, series resonance frequency, parallel resonance frequency, rejector circuit, current resonance, q factor of parallel resonance circuit and q factor of series resonance circuit.

AC Fundamental Interview Question Answer - 2

21	Describe the effect of harmonics on voltage and current in the pure inductive circuit.
	Effect of harmonics in Pure Inductive circuit The harmonic in the current waveform is much smaller than the voltage waveform. The magnitude of the 3rd harmonic current is 1 / 3 times to that of harmonic voltage.

AC Fundamental Interview Question Answer - 1

Give reason : The alternating waveform is called as sinusoidal waveform.

Sinusoidal waveform : The induced emf in the coil varies with the sine function of the time angle ωt therefore the alternating waveform is called as sinusoidal waveform.

Explain the following terms : Waveform, Amplitude and Frequency

Waveform : The shape of the instantaneous value of alternating quantity ( voltage or current ) is represented on Y – axis and time on X – axis is called waveform of the alternating quantity.