Answer / sanjeet

due to residual magnetic present in the rotor core

Answer / gopaul

initially we need three phase supply from the grid for
excitation.we have to start the motor as a generator,and
then by using the external energy we have to increase the
speed of the motor above syn speed.after that it starts
working as a induction generator

Answer / mina adeeb

yes i agree, it generates power due to the residual flux
in the rotor but without excitation i can't get high power
because a small flux

why transformer does not obey ohms low?

3 Answers   AITM,

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how to select overload-relay for perticular motor 1.for D.O.L. starter 2. for Star-delta starter ????

0 Answers   Vatika,

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Explain (in simple ) - root mean square. whats its role in electrical fundamandal.where its used

0 Answers   MRF, PPCL,

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As we know diode work on both negative and positive but converting ac into DC we have to given a/c from negative of diode or positive side.please give me answer.

0 Answers   cpgn,

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What will happen if supply frequency change in Transformer KVA rating ?

1 Answers  

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How many type of ht insulator with name

1 Answers   Bhushan Power Steel,

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Double Busbar Scheme for outdoor switch yard system (132kv) step up power plant Hi friends 1. in this system both busbars energized all the time. 2. what is the meaning of main BB and transfer BB, 3. step up transformer connect main bus bar all the time or both BB connected through DS switch . 4.bus sectionalization means ? thank you.

1 Answers   ABC, Gael,

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Even when a particular generator in a generating station is under maintenance we are still able to maintain the same power output. How is this possible? Does the tie line between 2 generating stations have a role to play in it?

1 Answers   NTPC,

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I am completed DEEE in tamilnadu, now i am working in andhrapradesh with 2.5 year experience in relavent field. capacity of the tranformer is 11KV, 1MVA Transformer, i am eligible for getting c licence in andhrapradesh pl help me.

0 Answers  

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what is the difference between the HT Cable and LT Cable ?

28 Answers   Intergulf, Prabhat Cables,

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In scott connection why connect teaser transformer to 86.6% and main transformer to 50%..

1 Answers   Silicon,

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what is the difference b/c choke and ballast?

1 Answers  

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