3.A 230-volt,55hp, 4-pole, 60 Hz,0.8pf lagging synchronous motor is Y-connected. Its synchronous reactance is j2.2ohm. The armature resistance can be neglected. The motor's friction&windage losses are 1300W and its core losses are 1000W.The Open-Circuit-Curve is given below. The motor supplies 20hp to a load attached to the shaft, at 0.8 pf lagging.Calculate: (a)the input power (b)the overall efficiency of the motor (c)the line and phase currents (d)the internal voltage Ea, induced at phase winding due to Faraday's Law. Find the field current corresponding to this value. The field current of the motor is now increased to 2 amps.For this new condition calculate: (e)the new Ea (f)the new phase current (g)the new input pf of the motor. 600 500 400 Open-circuit terminal voltage, V 300. 200. 100. 0 0.0 1.0 2.0 3.0 7.0 8.0 9.0 10.0 4.0 5.0 6.0 Field current, A 3 3.A 230-volt,55hp, 4-pole, 60 Hz,0.8pf lagging synchronous motor is Y-connected. Its synchronous reactance is j2.2ohm. The armature resistance can be neglected. The motor's friction&windage losses are 1300W and its core losses are 1000W.The Open-Circuit-Curve is given below. The motor supplies 20hp to a load attached to the shaft, at 0.8 pf lagging.Calculate: (a)the input power (b)the overall efficiency of the motor (c)the line and phase currents (d)the internal voltage Ea, induced at phase winding due to Faraday's Law. Find the field current corresponding to this value. The field current of the motor is now increased to 2 amps.For this new condition calculate: (e)the new Ea (f)the new phase current (g)the new input pf of the motor. 600 500 400 Open-circuit terminal voltage, V 300. 200. 100. 0 0.0 1.0 2.0 3.0 7.0 8.0 9.0 10.0 4.0 5.0 6.0 Field current, A 3