Electrical Machines
Value of specific electric loading of Induction motor is in the range of

 30000 - 100000 ampere conductor / metre.
  5000 - 45000 ampere conductor / metre.
 40 - 400 ampere conductor / metre.
  400 - 4000 ampere conductor / metre.

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Electrical Machines
Two dc machines A and B, using the same conductor material, have armature circuit resistances of 0.4 Ω and 1.2 Ω respectively. Of the two machines,

 both are of the same size for the same current rating
 B is bigger than A for the same current rating
 A is bigger than B for the same voltage rating
 A is bigger than B for the same current rating

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Electrical Machines
In a dc generator operating on load with its brushes on the geometrical neutral axis (GNA), the magnetic neutral axis (MNA) is shifted in the direction of rotation. Now, if the brushes are given a lead of 90° (electrical), then the MNA will

 shift forward by more than 90°
 coincide with the GNA
 shift forward by less than 90°
 shift forward by 90°

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