Answer / kiran

These are transformers specially designed to reduce the losses.

to reduce the iron losses i.e hysteresis and eddy current
losses,they use high graded silicon core and perfect
lamination's with good insulation.

but the copper losses depends upon loading the transformer.

some time we open engine breaker 8.0 MW load but plant not trip. and another time engine open 4.0 MW load engine trip why? individually engine breaker open & individually emergency stop why difference?

0 Answers  

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v/f drive basic princeple

0 Answers  

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In motors how many types of cooling systems were used?

0 Answers   NTPC,

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how u measure/calculate renge of capacitor,capacitor has no any rating tag.what is the theory of measure of capacitons.

0 Answers   Marriott,

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why we have to particulary use ACB for below ratings,even available of MCB,MCCB with that range ?

0 Answers   Siemens,

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why the motor is rated as kw& transformer as kva

7 Answers   Areva,

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how to check the LRS resistance .......................

1 Answers  

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Pls explain about full theory of salient pole generator?

1 Answers   Kirloskar,

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what is relay multiplier

1 Answers   Atomic Energy Commission, Bhel, Wipro,

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What is Procedure the procedure to select CT's & PT's in 66kV and above substation

1 Answers  

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our factory is going under construction mean time transformer 1000 kva 2 nos &load break swithch 12 kv & 4 nos 750 kva 2 nos & 380 kva 2 nos generator to be errcted.how to arrange earth pits &how to earth connect & neutral pit how to calculate in earth bit size.

0 Answers  

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Whether the over frequency protection is turbine or alternator and why?

1 Answers   Marg,

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