asked by
The poor power factor operation of variable speed d.c. drives for high-power application can be improved by employing forced commutated converters with 

A) Extinction angle control B) Symmetrical angle control C) Pulse-width modulation control D) All the above 

Please log in or register to answer this question.

Welcome to Q&A site for electrical and electronics engineering discussion for diploma, B.E./B.Tech, M.E./M.Tech, & PhD study.
If you have a new question please ask in English.
If you want to help this community answer these questions.