Electrical Machines
Number of tappings for each equalizer ring is equal to

  number of poles.
  number of commutator segments.
  number of parallel paths.
  number of pole pairs.

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Electrical Machines
A belt-driven cumulatively-compound dc generator is delivering power to the dc mains. If the Belt snaps then the machine will run as a

 cumulative compounded motor in the same direction
 differentially compounded motor in the opposite direction
 differentially compounded motor in the same direction
 cumulative compounded motor in opposite direction

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Electrical Machines
The damper windings also called the squirrel cage windings or damper grids

  consists of short-circuited copper bars embedded in the field pole faces.
  are provided on the stator for improving power factor.
  both (A) and (B).
  are provided in a synchronous motor to make it self starting.

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