Electrical Machines
Under commutation results in

  no sparking.
  sparking at the middle of the brush.
  sparking the trailing edge of the brush.
  sparking at the leading edge of the brush.

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Electrical Machines
Two generators operating in parallel with rating 50MW and 100MW respectively. Both their respective governor settings are identical as 4%, consider same no load frequency. How will the machine share a common load of 100 MW

 33.33 MW and 66.67 MW respectively
 any of the above
 66.67 MW and 33.33 MW respectively
 50 MW and 50 MW respectively

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