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Electrical Machines

Electrical Machines
The condition for maximum running torque is

 zero
 R = S.X
 unity
 0.5 lagging
 0.707 lagging

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Electrical Machines
Which of the following is not a part of transformer?

 Radiator.
 Tap changer.
  Commutator.
 Conservator tank.

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Electrical Machines
If a shunt generator delivers 100 A at 200 V, and the resistances of the shunt field and armature are 100 ohms and 0.01 ohms respectively, the generator emf will be

  parallel.
  no resistance is connected.
  any one of the connection.
  series.

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Electrical Machines
If the field connection of a DC Shunt Motor is changed then

 it will run in same direction by slowly.
 it will run in same direction.
 motor will not run.
 it will run in opposite direction.

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Electrical Machines
In case of DC shunt motor if load is reduced

 The speed will increase in proportion to reduction in load.
  The speed will remains almost constant.
 The speed will increase abruptly.
 DC Shunt Motor

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Electrical Machines
In an auto transformer, for what value of turn ratio, power transferred by inductively and conductively are same?

 0.5
 any of the above
 0
 1

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MORE MCQ ON Electrical Machines

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