when voltage increases then current also increases then what is the need of over voltage relay and over current relay? can we measure over voltage and over current by measuring current only?

1 Answers  

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Why is a plain induction motor unsuitable for wide speed control?

0 Answers  

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What are the functions of different probes used in cro?

0 Answers  

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how to calculate the cable size depending on the transformer rating

2 Answers  

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Advantage of 11KV ring main system with open point

1 Answers   Alam Group of Companies,

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is it possible to use a tranformer to regulate an unstable system voltage?

3 Answers  

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If any HVDC line is going with positive & negative(the negative usually have return path of current with earthing electrode). Now the question is if this HVDC earthed electrode which is using as return path and earthed any nearby 400kv or 220kv AC substation equipments. which will be the impact of this on AC substation & its equipment, how severe may be this and what should be the minimum distance require between HVDC earthed electrode and AC substation equipments? It's really an high engineering level question...Dare to answer and increase your knowledge.

0 Answers   MEIL,

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why we use ac system in india why not dc

3 Answers  

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How RTCC panel is working and give single line diagram for RTCC with transformer?

0 Answers   AB Associates,

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in dc transmission the frequency pi is zero, then how it will transmit communication signal?

1 Answers  

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Why we specify TNC switch with 1NO 1NC ,2NO 2NC ? how we get connection.?

0 Answers  

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in transformer which grade oil will use?

3 Answers  

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