What is the difference between air & vaccum circuit breakers?

2 Answers   IOCL,

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How can I calculate the trnaformer effciency at different loading condition?

2 Answers  

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what is surge impedence loading

2 Answers   NHPC,

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what is diffrence b/w -48vdc and +48vdc ?

1 Answers  

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Compare salient pole and Hndrical rotor machines.

1 Answers  

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what happen if position of GNA and MNA is changed in machine?

3 Answers  

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What are the testing to be done before the installation of 1000 KVA Transformer?

3 Answers   L&T,

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Can you any one explain different between instantaneous over current and IDMT

1 Answers  

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what would happen nif we increase or decrease the capacitor of a flood light.

1 Answers  

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What is class X ct? What rare its uses?

2 Answers  

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how to know the diffrential relay setting of 06mva step- down (delta-star)transformer?

0 Answers   IPCL,

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What is the reason that the humming sound is coming from the induction furnace panel?

0 Answers   SKS Microfinance,

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