a.c generator

2003

2006-11-18 8:31 am

1.a.c generator 的能量轉換係唔係由
magnetic force 轉 kinetic energy(mechanical energy) 再轉 electrical energy?

2.magnetic force 係咪因為有conductor cut 到changing magnetic field,
跟住有induced voltage,加埋complete circuit,所以有induced current.
induced current 就有induced magnetic field,induced magnetic field 比左個force?
咁講對嗎?

回答 (1)

manuel

2006-11-19 8:21 am

✔ 最佳答案

1, 是由外力 => kinetic energy => electrical energy => opposing magnetic force

2, 如果你所說的是conductor本身感受到magnetic force
那當conductor cut 到changing magnetic field
=> induced emf => because the close circuit, induced current
=> magnetic force
(由於conductor本身存在於magnetic field內,加上有current,以至產生magnetic force )

2006-11-22 18:29:30 補充：
外力是指使 generator 轉動的力
像用手"搞" 或用水流推動等
總之就係 supply a torque

👍 0 👎 0