Electrical Machines
DC motors are stopped by opening line switches and not by forcing the handle of the motor starter back to OFF position. This is due to occurance of

 Heavy sparking at brushes.
 Both of above.
 None of these.
 Heavy sparking at the first stud of starting resistance steps.

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

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