What are the difference between off-load tap changer and on-load tap changer in transformer?

2 Answers   HCL,

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what are the main problems that happen in an emergency light and how to fix them ?

2 Answers  

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What is Synchronization of generator,where and how it is achieved.

1 Answers   HEC,

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Which one is correct mVA or MVA. Whether both the units are same for the transformer

10 Answers   Areva,

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Ho de we calculate the line loss of a 500 kv line over 1000km.

1 Answers  

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A ii kv 1200 A Breaker combination fixed in a cubicle. How many ampere Fuse is required? If fuse is not using, Why?

0 Answers  

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How to design power source say 5KW i/p :415v 3 ph, o/p 5KW constant, variable currnt and variable volatge 10-230v,

2 Answers  

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what is mean by kneepoint voltage? when it will happen? ( my doubt is, if CT secondary is open means ct get saturation or blas? what are factors are required for calculations? plz give currect anws:

0 Answers  

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how to calculate short circuit calculation of the transformer by usuing the percentage impedence? formula needed.

2 Answers   L&T,

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What happens to the terminal voltage of an alternator connected to a bus bar when it is suddenly disconnected from the bus bar??

2 Answers  

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Write the formula for Fault MVA, Fault current, Base MVA.

2 Answers  

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why three phase system is not preferred in aircrafts power cckts if yes than explain reasons?

3 Answers  

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