In DC compound Motor the shunt field and series field winding is made up of _________ & ____________ respectively
Right Answer is:
High Resistance, Low Resistance
SOLUTION
In a compound machine, there are two field windings, namely a shunt-field winding and a series-field winding. The shunt-field winding is connected in parallel with the armature and the series-field winding is connected in series with the combinations as shown in Fig.
The series winding will carry a large armature current Ia or IL, and therefore it is made of wires of large cross-section and has a few turns only. The resistance of a series winding is very small.
The shunt-winding is made up of wires of small cross-sections and has high resistance. Since the resistance of the shunt field winding is high, the current flowing through it is small in comparison with the machine’s armature current. The main flux is created by the shunt winding but it is modified by the flux of the series winding. A compound machine, therefore, combines the best features of shunt machines and series machines.