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Electrical Machines

Electrical Machines
In which transformer, the tertiary winding is used?

 Star - delta
 Delta - star
 Delta - delta
 Star - star

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Electrical Machines
In most condition which frame of motor will be preferred?

 Drip proof.
  Totally enclosed fan coiled.
 Splash proof.
 Open type.

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Electrical Machines
A 100 KVA transformer is operating at 60 Hz, 240 V supply. The same transformer is operating at 50 Hz, 200 V supply. The new rating is

 83.33 KVA
 123.3 KVA
 50 KVA
 100 KVA

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Electrical Machines
For power factor improvement the synchronous motor is to be

 lightly loaded and underecited
 heavily loaded and underexcited
 lightly loaded and over excited
 heavily loaded and over excited

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

 silicon steel.
 mild steel.
 fibre.
 cast iron.

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Electrical Machines
DC machine is a

 conduction machine.
 none of above are correct.
 both are correct.
 convection machine.

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MORE MCQ ON Electrical Machines

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