In bipolar modulation, the carrier is symmetric about zero with amplitude equal to Cm, the PWM output

(A) Zero (X)
(B) Switches between – 1 / 2 and + 1 / 2 ()
(C) Switches between – 1 and + 1 (X)
(D) Switches between 0 and + 1 (X)

Answers: In bipolar modulation, the carrier is symmetric about zero with amplitude equal to Cm, the PWM output Switches between – 1 / 2 and + 1 / 2.