If D1, D2, D3, D4 are the distortion produced by second, third, fourth, fifth respectively (others are insignificant). Then total harmonic distortion is __________
(a) √(D1^2+D2^2+D3^2+D4^2)
(b) √(D1^2+D3^2)
(c) √(D2^2+D4^2)
(d) √(D1^2+D2^2)
The question was posed to me by my college professor while I was bunking the class.
Question is taken from Distortion in Amplifier in division Power Amplifier of Analog Circuits