<P> A DC motor 's speed and torque characteristics vary according to three different magnetization sources , separately excited field , self - excited field or permanent - field , which are used selectively to control the motor over the mechanical load 's range . Self - excited field motors can be series , shunt , or compound wound connected to the armature . </P>
<P> A DC motor 's speed and torque characteristics vary according to three different magnetization sources , separately excited field , self - excited field or permanent - field , which are used selectively to control the motor over the mechanical load 's range . Self - excited field motors can be series , shunt , or compound wound connected to the armature . </P>
what factors determine the amount of torque on the armature of a rotating dc electric motor
what factors determine the amount of torque on the armature of a rotating dc electric motor
separately excited field self - excited field permanent - field
separately excited field self - excited field permanent - field