关于直流电动机和发电机的几种说法中,不正确的是( )Among several statements about DC motor and generator, the incorrect one is ( )
A.
电动机是把机械能转化为电能的装置A motor is a device that converts mechanical energy into electrical energy
B.
电动机是利用通电线圈在磁场中转动的原理工作的The motor works on the principle that the current-carrying coil rotates in the magnetic field
C.
发电机是把机械能转化为电能的装置A generator is a device that converts mechanical energy into electrical energy
D.
发电机是利用电磁感应原理工作的 The generator works on the principle of electromagnetic induction