Calculate the efficiency of each machine

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Hopkinson's test on two machines gave the following results for full load; line voltage 230 V, line current excluding field current 50 A; motor armature current 380 A; field currents 5 and 4.2 A. Calculate the efficiency of each machine. The armature resistance of each machine = 0.02 Ω. State the assumptions made.

Reference no: EM131266659

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Calculate the efficiency of each machine : The armature resistance of each machine = 0.02 Ω. State the assumptions made.

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