What is Percentage impedence of a transformer? why it is expressed at a percentage? what is the importance of percentage impedence in case of a transformer?

0 Answers   Haldia,

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what is LOS(line of sight)?

1 Answers  

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what is excitation/

0 Answers   ABB, Tata Steel Limited,

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why the rating of dc generator is in kw where as rating of alternator is in kva?

3 Answers  

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What is the difference between ARC & SPARK?

4 Answers   OPTCL,

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Magnetizing current for induction motor compared to transformer is= A equal B more C less D depends on load

1 Answers  

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How does frequency affect KVA rating of a transformer? If a 500 kva, 500 to 250 v, 60 hz t/f normally used in Canada is to be operated in Europe on 50 hz frequency then how will its KVA rating change? a-increase b-decrease c-remains same

1 Answers  

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what is meant by bus bar and outgoing/incoming breaker in an electrical/electronic circuit

3 Answers  

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what is the significant for using two types of voltage(line voltage & phase voltage)

1 Answers   NTPC,

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Why electric traction is used ??

3 Answers   IOCL,

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Leading power factor means what? what is the power factor value while in power factor is leading? is power factor greater than one? In some cases i heard pf 0.8 leading then what about 0.8 lagging?

1 Answers   Rockfort Engineering,

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What is the suitable rating of MCB for 1.5 Ton A.C and why? 1Ton= how many amperes?

5 Answers   BARC,

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