Problems faced when motor used as generator

Replies

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  arunchary

  losses first as to be considered, excitation is to be in external it may problem,and also consideration of AC and DC types.....
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  Jeffrey Arulraj

  In the case of DC motor when the motor runs An emf is induced right opposing the flux change
  
  Then why can't it be used for other purposes the efficiency of the motor will increase on the whole as multi tasking is done by the motor