Electrical Machines
A 4 pole dynamo with wave wound armature has 51 slots contains 20 conductors in each slot. If induced emf 357 Volts and speed is 8500 rpm, flux per pole will be

 3.5 mWb.
  1.2 mWb.
 2.7 mWb.
 1.4 mWb.

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Electrical Machines
DC Motor

  dc shunt motor with field weakening.
  dc shunt with armature resistance control.
  dc compound motor.
  dc series motor.

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