For the parallel operation of two or more D.C. compound generators, we should ensure that_______________?

• A. voltage of the incoming generator should be same as that of bus bar
• B. polarity of incoming generator should be same as that of bus bar
• C. all the series fields should be run in parallel by means of equilizer connection
• D. series fields of all generators should be either on positive side or negative side of the armature
• E. all conditions mentioned above should be satisfied