What will happen if the interpoles in case of a generator have opposite polari

What will happen if the interpoles in case of a generator
have opposite polarities to that behind it in the direction
of rotation ?

Question Posted / rakesh

1 Answers
4307 Views
I also Faced
E-Mail Answers

What will happen if the interpoles in case of a generator have opposite polarities to that behind ..

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.

Is This Answer Correct ?

2 Yes

0 No

Post New Answer

More Electrical Engineering Interview Questions

-What should be minimum value of insulation resistance and maximum value of earth resistance at any electrical instillation and what is method of testing the same.

0 Answers

What are the effects of armature reaction on a DC machine and discuss the various methods to reduce the effect.

1 Answers

what is the formulae for selcting capacitor bank to increas pf

3 Answers

What is the difference between a Root Locus plot and a Bode plot?

0 Answers GE,

Dear, How much ph is maintained of water electrolite used in lrs for slipring induction motor ?

1 Answers

What determines the thermal loading on the motor?

0 Answers

What should be the earthing resistance of an industrial substation and also What should be the house hold earthing resistance?

20 Answers Jindal, Pharma, TAAT, TATA,

How the size of electic machine vary with the sped? Between slow and fast running machines of equal ratings, which one is more economical to design?

1 Answers

How can w select the cable size for different rating load & also waht r factors affecting the during selection of cable?

11 Answers AB Inc, Bosch, BRB Cable, Lucas TVS, Trisome Technical Services,

what is the difference between gsm and cdma??

2 Answers QMS, Vedanta,

what is meant by negative half cycle

2 Answers

Why Batteries are rated as AH i.e AmpereHour,and its formula to converting AmpHour to Amp

4 Answers Suzlon,

For more Electrical Engineering Interview Questions Click Here