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Electrical Machines

Electrical Machines
We can apply source transformation to voltage source when a resistance is connected to it in

 15 HP.
 14 HP.
  10 HP.
  13 HP.

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Electrical Machines
Slot wedges in a dc machine is made up of

 silicon steel.
 mild steel.
 cast iron.
 fibre.

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Electrical Machines
On what factors the speed of dc motor depends?

 Applied voltage.
 All of these.
 Field flux.
 Armature current Ia.

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Electrical Machines
Breadth factor is defined as the ratio of

 emf with concentrated winding to emf with distributed winding.
None of these
 emf with distributed winding to emf with concentrated winding.
 both 1 and 2.

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

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

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Electrical Machines
Stability of a synchronous motor ---------- with the increase in excitation.

 remains unaffected
 any of the above
 decreases
 increases

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MORE MCQ ON Electrical Machines

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