A 75-hp, 600 V, 1000 rpm, three-phase Y-connected synchronous motor has an armature resistance of 0.05 ohm per phase and a leakage reactance 0f 0.45 ohm per phase. The efficiency at rated load, 80% pf...

A 75-hp, 600 V, 1000 rpm, three-phase Y-connected synchronous motor has an armature
resistance of 0.05 ohm per phase and a leakage reactance 0f 0.45 ohm per phase. The efficiency
at rated load, 80% pf leading is 92%. Determine mechanical power developed within the
armature.

Answer: 60

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