In single pulse modulation of PWM inverters, the pulse width is 120°. For an input voltage of 220 V dc, what is the r.m.s. value at the fundamental component of the output voltage?

In single pulse modulation of PWM inverters, the pulse width is 120°.

1.	In single pulse modulation of PWM inverters, the pulse width is 120°. For an input voltage of 220 V dc, what is the r.m.s. value at the fundamental component of the output voltage?
A.	171.5 V
B.	254.0 V
C.	127.0 V
D.	89.81 V
Answer» B. 254.0 V