Question: 1. A short shunt compound generator delivers a load current of 30A at 220V. Armature resistance 0.05 series filed resistance 0.05 , and shunt

1. A short shunt compound generator delivers a load current of 30A at 220V. Armature resistance
0.05 Ω series filed resistance 0.05 Ω, and shunt field resistance 200 Ω. calculate the Induced
EMF and the armature current. ΔV = 1 v/brush

2. A dc shunt generator has an induced voltage on open circuit of 127 V. When the machine is on- load the terminal voltage is 120V. Find the load current if the field circuit resistance is 15 Ω and armature resistance is R _a = 0.02 Ω.

3. A separately excited DC generator when running at 1200 rpm at 125V to a circuit of constant resistance. What will be the current when the speed is dropped to 100 rpm and the field current is reduced to 80%. Armature resistance 0.04 Ω and the total drop of brushes is 2V. Ignore saturation and armature reaction.

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