會不會有a.c motor出現?
a.c motor會不會不停地轉方向搞到轉轉下停左?
手提電話係用a.c 定d.c電運作?
咁平時插落socket的電器如風扇、雪櫃係a.c 定d.c?
是不是所有motor 都是d.c?
2008-01-23 6:01 am
回答 (2)
2008-01-23 6:08 am
✔ 最佳答案
兩樣都會有只不過dc係用commutator
而ac就用carbon brush
手提dc
平時插落socket的電器如風扇、雪櫃係ac
2008-01-23 6:09 am
there is a.c. motors. They will convert a.c. to d.c. via transformer.
All other electical appliances, e.g. fan, TV are inputed from a.c. and then converted to d.c. under operation
All other electical appliances, e.g. fan, TV are inputed from a.c. and then converted to d.c. under operation
收錄日期: 2021-04-13 15:00:49
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20080122000051KK07362