Why we use stones in switchyard?

3 Answers   Havells, L&T,

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quantizer means?

0 Answers  

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How to select power cable for machine

4 Answers  

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Two liquids hot and cold in two vessels are there and an metal bar acts as a conductor of heat between the two vessels. what happens then. what happens after 24 hrs?

0 Answers  

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why we not using 230kv directly why we are stepping down and then stepping up

2 Answers   Siemens,

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why we are using DC supply in megger?

3 Answers   TATA,

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what is the function of closing coil in air circuit breaker?

0 Answers   Fresher,

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how many bulb of 60watt at 300volt is used to maintain 0.25 amp.with valid reason?

4 Answers   Cords Cable, TATA,

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If a ACB breaker is tripping and closing problem, then what will we check internal..?

3 Answers  

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why the undervoltage relay's interlock is used in earthswitch closing operation of the 400kV line scheme?

2 Answers  

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How can we calculate the cable size??? plz give the formula !!!!!

3 Answers  

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last week we did the REF relay test by closing single pole (R phase) of CB and apply 380V at the primary of delta transformer. we get 33A at the primary of the R phase star end. but we get 380A at both R an B in delta side. how and why?

1 Answers   Siemens,

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