Answer / rakesh

There will be delayed commutation , for the brushes are
still in interpolare axis , but due to the armatut=re
reaction the point of 0 flux density gets displaced in the
direction of rotation of the generator , hence the armature
coils after crossing the brushes wil still remain under the
polarities of the trailing poles , hence again a rotational
emf will be generated which again opposes the current
reversal in the commuted coil , thereby causing delayed
commutation , it is for this reason that the interpoles are
designed with the same polarites as the main oles behind it
in the direction of the rotation in case of generator , and
opposite is the case with a motor.

What is the technical reason for adopting color coding of three phase system as RYB.

11 Answers   ABB, ERDA,

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if two transformers are parallel & both have fault short ckt. impedance of 50KA in each case will it increase or decrease show example?

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0 Answers   APTransco,

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1 Answers  

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What is the magnetic field (coil DC ) of Turbo Expander?

0 Answers   TATA,

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2 Answers  

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Is it possible to interlock between ACB & MCCB?

2 Answers   Areva,

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How much ph is maintained of water resistance starter for slipring induction motor ?

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Dear All we are having a problem in G120 BOP showing alarm A0503, F0052, F0060 we can not remove fault alarm ,Please any body help us. kowsar

0 Answers   TCCL,

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