What is an electric arc?

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Which of the following are the important limitations of rod gap surge arresters? 1. They are not capable of selling off power frequency follow up current. 2. After a discharge, the rods are destroyed completely. 3. Performance is affected by climatic conditions. Use the following codes for selecting the correct answer. Codes: (a)1, 2 and 3 (b)1 and 2 (c)2 and 3 (d)1 and 3

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what is the diff between earth leakage relay and earth fault relay?

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Can you any explain about active,reactive and apparent power in power system with example.

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what r Grid stations?what r there role.Explain in detail

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In a three-phase full converter, output voltage pulsates at frequency of a. f b. 2f c. 3f d. 6f

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what is the minimum recommended leakage current of an earthed cable connected to the body or skid of an alternator

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What is rotating magnetic field?Discuss elaborately.

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why we use the fuse in only one wire? althrough in ac current the current flows in both directions. why the neutral wire can be taken half the magnitude of phase wire while same current returns from neutral wire?

2 Answers   Bhel,

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what would be the earth to neutral voltage in industries? if it is not main Taine then what will happen?

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in alternator why on load terminal voltage is less than no load teprminal voltage

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which is the gas used in tube light?

12 Answers  

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