Answer / sheikh

Yes . IGBT switching response is better.

Answer / sanjna

YES, WE CAN USED.....
IN ALL AC TO DC CONVERTING DEVICES IGBT IS USED.

i am going to give the JSEB,RANCHI exam for power plant,so i need some samples of papers related to that,so please send me these papers by my mail id.

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what is the affect of earth's magnetic field on the frequency used in aircraft???

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Why 9KV surge arrester having 7.65KV of MCOV?

0 Answers  

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what is the preventing maintenance of transformer

1 Answers  

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when we design electrical schemes of 11/.415kv distribution..wen and were should we show the relays??what is the function of it?for example..we place EFR Relay CT between transformer neutral link and transformer earth.Like this what are the other type of relays we should use?why?where?Explain please..Thank you

0 Answers   ETA,

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give me atleast four differences between circuit and network

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On what factors the generating voltage depends ? Generating voltage are (3.3kV, 6.6KV , 11KV, 13.8kV) Why so ?

5 Answers   Bhel,

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Why r u using pf panel. what the uses

0 Answers   Standard Chartered,

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Differenciate between circuit wiring and sub main wiring with illustrations

0 Answers   MU,

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7. Why AC motors, AC bulbs etc... are donot operated by DC signals? and Why DC motors, DC bulbs etc... are donot operated by AC signals?

2 Answers   Bhel,

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what is the d/f b/w dol & star delta starter.

2 Answers  

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I have one ct of ratio 3000-2000/1 Amp its knee point voltage mentioned on name plate is 500-333/30mA-50mA at Vk/2. in secondary box there is three terminal named 1S1, 1S2, 1S3 then on which terminal obtained the knee point voltage ie 1S1-1S2 OR 1S1-1S3 & also specify the knee point voltage for the ratio 3000 from name plate.

0 Answers  

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