题目内容
An induction motor's rotor can be either wound type or ????????-???? type.
查看答案
搜索结果不匹配？点我反馈
更多问题
The common weakness for a single phase induction motor is it has a very small start torque. To increase its start torque, a strating _____________is connected in series into start winding which will be disconnected when the speed reaches 75% RPM by centrifugal switch.
To change the speed of a DC motor, you can change the applied DC____________. To change the speed of an AC induction motor you must change the ____________ of the AC power supplied.
The stepping size may vary from 0.72° to 90°. This means that a setp motor shaft may turn from 0.72° to 90° for every input_________.
A transformer is a passive electrical device that transfers electrical energy from one electrical circuit to another electrical circuit.
微信支付 
支付宝支付