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Electrical Machines

Electrical Machines
The starting resistance of DC motor is generally

 1000 ohms.
 around 500 ohms.
  Low.
 Infinitely large.

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Electrical Machines
Armature reaction in dc motor results

  increase in speed.
  decrease in speed.
  open circuit.
  short circuit.

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Electrical Machines
Universal motors are used in

 traction
 food processing
 cranes
All of these

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Electrical Machines
In a DC Shunt Motor if the load current increases keeping the terminal voltage constant, then flux will

 decrease.
 any of the above.
 increase.
 remain constant.

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Electrical Machines
The output voltage of a DC generator is

 E = V + Ra.
 E = V + Ia.
  E = V + IaRa.
 E = V – IaRa.

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Electrical Machines
Larger values of air flux density is taken while designing IM for

  larger bore diameter.
  none.
  both.
  larger output.

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MORE MCQ ON Electrical Machines

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