1.

If Vr is the rms value of the inverter output voltage and V1 is the rms value of the fundamental component, then the total harmonic distortion (THD) is given by

A. V<sub>r</sub>/V<sub>1</sub>
B. (V<sub>r</sub> + V<sub>1r</sub>
C. [ (V<sub>r</sub>/V<sub>1</sub>)<sup>2</sup> – 1 ]<sup>1/2</sup>
D. [ (V<sub>r</sub>/V<sub>1</sub>)<sup>1/2</sup> + 1 ]<sup>2</sup>
Answer» D. [ (V<sub>r</sub>/V<sub>1</sub>)<sup>1/2</sup> + 1 ]<sup>2</sup>


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