40 views
asked by

Please log in or register to answer this question.

1 Answer

+1 vote
answered by
It is simply variable resistance create opposition to flow of current and decrease or increase the speed of fan

Related questions

1 answer 8 views
1 answer 39 views
2 answers 47 views
asked Aug 6, 2017 by Zeeshan

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.

...