Consider a separately excited DC motor. It has 220 V, 100 A, 1000 rpm, and armature resistance of 0.03 Ω. If the armature is fed for variable voltage having some internal resistance 0.02 Ω. Calculate internal voltage of variable voltage source if the motor is operating in regenerative braking at 80% of rated torque at 800 rpm.
1
169.6 V
2
166.9 V
3
196.6 V
4
199.6 V
5
None of these