what are the needs of electrical earthing.... other than protection?

5 Answers   Eskom,

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what is stepping motor and where can use in electrical installation.

3 Answers  

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What is mean by ideal infinite bus? Why it is required to consider in fault short circuit calculations?

1 Answers  

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Why is the earth pin in a 3-pin plug the longest and the thickest?

10 Answers   IBM,

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Why the size of transformer decreases if we increases the frequency?

5 Answers   Graphics Engineering,

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what are the ratings of sockets?

10 Answers   L&T,

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We have a 33/11kv switchyard having 12.5 MVA power transformer. We export & import power through this transformer. When we export power, the PF will be depend on GRID PF & when we import power the PF will be depend on our load PF. but the problem is that,when neither we export nor import but our 33KV vCB is in close position,our meter read the power factor 0.14 to 0.25 at that moment. So how can be we improve the power factor at that moment.

3 Answers  

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what is the question paper model for section engineer in RRB

0 Answers   RRB,

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As the one point of eac phase winding is connected to each other in satr connction. Even if that at distribution side collesion of two diff phases result in to blast. Why?

1 Answers  

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What is core CT & it's function?

0 Answers  

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we have provided 30 nos. relay contacts in panel.I want to know how do we do the numbering for the relay contacts as per any applicable standards

0 Answers  

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why voltage rating of transformers are in multiples of 1.1?

3 Answers  

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