Electrical Machines
In an alternator the voltage generated per phase is proportional to

All of these
  frequency of waveform.
  flux per pole.
  number of turns in coil.

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Electrical Machines
Consider the following statements: To control the speed of a dc shunt motor above the base speed over a reasonably wide range, the motor must 1. have compensating winding 2. have interpole winding 3. be started using a 3-point starter 4. be started using a 4-point starter Of these statements

 1 and 3 are correct
 2 and 4 are correct
 1, 2 and 4 are correct
 1, 2 and 3 are correct

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