Q.2: A 3-phase 500V, 50 Hz star-connected synchronous machine has asynchronous impedance of ( 0.4+j4) 2 Using circle diagram, calculate the load angle, armature current and power factor if the alternator is developing (12) Kw at rated voltage and an excitation voltage of (a) 400V (b) 600V Solve the above if the alterantor is delivering (15) Kw at rated voltage.

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0.2: A 3-phase 500V, 50 Hz star-connected synchronous machine has
asynchronous impedance of ( 0.4+j4) n Using circle diagram, calculate the load
angle, armature current and power factor if the alternator is developing (12) Kw
at rated voltage and an excitation voltage of (a) 400V (b) 600V
Solve the above if the alterantor is delivering (15) Kw at rated voltage.
Transcribed Image Text:0.2: A 3-phase 500V, 50 Hz star-connected synchronous machine has asynchronous impedance of ( 0.4+j4) n Using circle diagram, calculate the load angle, armature current and power factor if the alternator is developing (12) Kw at rated voltage and an excitation voltage of (a) 400V (b) 600V Solve the above if the alterantor is delivering (15) Kw at rated voltage.
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