Answer / k.prakashchandra

Regular 3 phase windings for both stator and rotor.I don't
think heating element is provided .A low voltage is applied
to windings with help of a transformer so that a current
equal to or less than full load current is circulated to
warm up the windings .The voltage and capacity of this tr
depends on the rating of the motor.As the stator is normally
delta wound, one coil gets the full voltage and other two
50% each.As you press the start button ,the transformer gets
disconnected or you can switch it off beforehand.

hwat type of motor is used in thermal gas turbine hydro nuclear power plants and why

0 Answers   Bhel,

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what use marshalling kishock in power transformer?

2 Answers  

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Hi Suppose we have a wye/wye transformer which is grounded at both sides,in this situation, do we have ay ground transformer? in other words, ground transformer can do any thing more (while we have nuetral wire in both sides)? As the last question, what about 3rd harmonic? we have two choices: first using wye/delta transformer + ground transformer and second using wye/wye earthed connection.in the former choice, we dont have 3rd harmoonic at the secondary side but what about Yn/yn conection? do we suffer from 3rd harmonic in the Yn/yn connection?

0 Answers  

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How to calculate KW saving for power factor correction from 0.92 to 0.98 at 350KW load?

5 Answers   Heidelberge Cement,

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what's the difference between induction generator and synchronous generator?

1 Answers   IBM,

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What is meant by Active and reactive power?

23 Answers   College School Exams Tests, Schneider, Torrent Power,

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when a pure dc signal is sent through a moving iron meter, what will it read?? dc or rms?? when a variable dc signal is sent through a moving iron meter, what will it read?? dc or rms??

1 Answers   GATE,

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What kind of battries are generaly used with Disel Generator?

1 Answers   Exide,

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what is quality factor in series resonance circuit and calculate the factor of voltage magnification? how it happens?

0 Answers   BARC,

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What is the difference btwn grounding and earthing?

11 Answers   HAL,

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On the transformer breather at what length should i change my sililca gel.

4 Answers  

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hi this is hema can anyone mail me previous years questions for the APPSC-A.E.E (in electrical stream.) ......thank u.

0 Answers  

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