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“Effefct of unequal voltage on two generator:
Genarally we are fimiliar with this issue in power plant When alternetor are operating in parallel candition or synchronising Candition.
Let's consider two alternators having their emf
"Ea" and "Eb"
Same in phase but different in their magnitude.
The resultant emf, Er Being equal to "Ea -Eb"
Er =Ea-Eb it is acted the local circuit and causes
synchronizing current “ Isy” around the local circuit.
This synchronizing current “Isy”
lags behind Er or Ea by 90 degree.
Thus synchronizing current “Isy produce “Demagnetizing effect on machine 1.
Resulting thereby reduction in emf of machine 1 “Ea” and
Magnetizing effect on machine No 2 resulting thereby increase in “Eb” of machien 2.
Thus Difference between of E1 and E2 is reduced and Stable Condition Is Established,
Thus Machine will operated on balanced condition.!
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