Hi,
for the circuit attached ,
when finding voltage of no load the answer continued with Ea value at full load for finding current,But Ea depends on If and If grew more. Shouldn't Ea also change since it depends on If ????

 

On no load the machine behaves as a self excited shunt generator. Are you familiar with how the no-load operating condition is established in that case.
It depends upon the distinct intersection of the no-load saturation and shunt field resistance load line curves.