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The result of a Hopkinson's test on two identical shunt machines is given below. Line voltage = 250 V. Field currents 1.2 A and

The result of a Hopkinson's test on two identical shunt machines is given below. Line voltage = 250 V. Field currents 1.2 A and 1.5 A. Armature currents 145 A and 115 A. Armature resistance of individual machines = 0.15 0. 1) 2) Estimate the efficiency of the motor (in %) Estimate the efficiency of the generator (in %)

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