Electrical Machines
Two DC generators having equal open-circuit emfs but slight different load characteristics are operating in parallel, then

  the machine with more drooping characteristic will supply less load.
 the machine with more drooping characteristic will supply more load.
None of these
  the machine will share load equally.

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Electrical Machines
Cogging of induction motor occurs at

 high voltage and when stator and rotor poles are equal.
 low voltage and when stator and rotor poles are equal.
 low voltage and when stator and rotor poles are not equal.
 high voltage and when stator and rotor poles are not equal.

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