Answer / c r satpathy

The trip circuit supervision relay is used for supervising important control circuits such as circuit-breaker
and disconnector control circuits and signalling circuits in power electrical installations. Generally one supervision relay is needed per circuit to be supervised. If several branches of a circuit are to be supervised, the required
number of relays can be connected to the same control circuit. Continuous monitoring of circuit-breaker trip circuits and other essential control circuits. Preset operate time preventing unwanted alarm signals at circuit-breaker operation

What is the basic principle of circuit breaker?.. I read that it works on electro-mechanical principle... Does it require both electric n magnetic conversion to act?

3 Answers  

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7. Why AC motors, AC bulbs etc... are donot operated by DC signals? and Why DC motors, DC bulbs etc... are donot operated by AC signals?

2 Answers   Bhel,

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can we use engine degreaser for electrical motors?

0 Answers  

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what is the chemical name for oil that used in the transformer

2 Answers   NCC,

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single phase can run in PVC conduit. Three phase can also run in one PVC conduit. But two phase cannot run in one PVC conduit. WHY? reply plz....awaiting your answer.

8 Answers   L&T,

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what is the pressure of vacuum circuit breaker

2 Answers  

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What is ELR, and where it is used ?

7 Answers   KSEB,

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which one is dangerous AC Power r DC Power for Electrical Shock ?

10 Answers  

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what is the method of electric earth for the protection of low voltage electric equipment

1 Answers   MacLellan, Shiva Corporation, Siemens,

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In case of dc circuit Whether dc current will pass through capacitor after it gets charged?

2 Answers  

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

1 Answers  

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could i arrange a faulty and healthey battery bank togather in parallel , if your ans is not then why?

3 Answers  

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