DC Shunt Motor Charatersitics

Long Shunt and Short Shunt DC Compound Machine: In short shunt DC Compound Machine, shunt filed winding is connected across the Armature whereas in Long shunt connection it is connected across the line terminal. But there is no difference in operating characteristic in two types of machine. DC Shunt Generator Characteristics: There are four basic … Read more

DC Motor Starter

D. C Motor Starting:   Why Starter Needed:   Let Vt  = Terminal Voltage Ia = Armature Current ra = Armature Resistance Ea = Back emf = KaØWm At the time of starting, speed of motor is zero hence Wm = 0, therefore there will not be any Back / Counter emf. Hence if we … Read more