A generator has armature resistance of 0.1Ω and develops an induced emf of 120 V when driven at its rated speed. Its terminal voltage when a current of 50 A is being drawn is

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Armature resistance R = 0.1Ω Induced emf, e = 120 V Current drown, I = 50 A We know that, e = V + I R or, V = e − I R = 120 − 50 × 0.1 = 115 V

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