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 P.f. of the system decreases when it is connectect across induction motor? & how to maintain the p.f. of system to unity.?

6 Answers   Reliance,

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How is the gain affected by the introduction of feedback in a control system.

0 Answers   GE,

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why substation ratings are multiple of 11 means 11\33 kv substation

6 Answers  

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What is polar plot?

0 Answers  

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where would be tap changer in transformer & why?

2 Answers   Kentz,

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how can we avoid magnetostriction in transformer?describe the suitable methods.

3 Answers   Bhel,

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what is the purpose of vector group in a transformer ? if 2 tranaformers r connected in parallel the vector group is same or not? for parallel operation 2 transformers of different manufacturers maintain same vector group or not?

3 Answers   Orchid,

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if the transformer at full load have a iron loss =900w and copper loss = 1600w . what percent of the load will the transformer has a maximum efficiency?

3 Answers  

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State norton’s theorem?

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If we have to find the inductance of a dc shunt motor then by giving dc supply or ac supply and what is the reason for it. (this example is from "to determine the transfer function of a dc shunt motor ")

0 Answers  

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What is s-domain and its significance?

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