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

single sphase energy meter measur

7 Answers  

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why are maintine power factor 0.99 in Eb line? why are used capacitor bank in Eb line? what is the purpose capacitor bank?

4 Answers   TNEB Tamil Nadu Electricity Board,

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what is the consuption rating of motor in one day

1 Answers  

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At a family reunion were the following people: one grandfather, one grandmother, two fathers, two mothers, four children, three grandchildren, one brother, two sisters, two sons, two daughters, one father-in-law, one mother-in-law, and one daughter-in-law. But not as many people attended as it sounds. How many were there ?

6 Answers   CTS,

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how we decide scurt (disc) of insulator with respect to kv rating

1 Answers  

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What is Lockout Relay and what is use of it in electrical installation

1 Answers  

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What is the power factor,apparent power,reactive power and formula of power factor.

3 Answers   MNC,

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What is the feedback in the control system?

0 Answers  

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what is earth fault relay 64T, why it is used in main Incomer and neutral CT of Transformer.

0 Answers  

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which is best ac or dc

3 Answers  

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What is the cut-off rate?

0 Answers  

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sir i am fresher.can you please tell me how can i get certificate of competency as electrical supervisor.

1 Answers   ONGC,

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