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For a four pole, 200 V dc shunt generator having armature resistance of 1 ohms. The current flowing in the armature is 10 A. What is the back emf generated if the terminal voltage of 220 V supply is fed?

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For a four pole, 200 V dc shunt generator having armature resistance of 1 ohms. The current flowing in the armature is 10 A. What is the back emf generated if the terminal voltage of 220 V supply is fed?

(a) 230 Volts

(b) 210 Volts

(c) 190 Volts

(d) 200 Volts

The question was asked in final exam.

My question is taken from EMF Generated in the Armature topic in section Electromechanical Energy Conversions of Electrical Machines

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Best answer
Correct answer is (a) 230 Volts

Easiest explanation: E = V+I*ra

              = 220+10*1

              = 230 Volts.

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