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Electrical Machines

Electrical Machines
Normally for the design of transformer the ambient temperature is taken as

 35°C.
 27°C.
  45°C.
 32°C.

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Electrical Machines
In which of the following generators negative voltage regulation can occur?

 shunt generator
 series generators
 over compound generator
 both B and C

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Electrical Machines
Generators work on the principle of production of

None of these
 dynamically and statically induced emf.
 dynamically induced emf.
 statically induced emf.

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

  13 HP.
 14 HP.
  10 HP.
 15 HP.

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Electrical Machines
Which of the following motor is not suitable for frequent starting and stopping?

 Capacitor run motor
 Resistance split phase motor
 Capacitor split phase motor
All of these

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Electrical Machines
In synchronous generator a synchronous dead load (lamp, furnaces etc) has no ____________ hence it has no natural frequency of oscillation.

 mechanical rotatory system.
  restoring torque.
 damping torque.
 synchronizing power co efficient.

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