Answer / sheikh

Do you means over & under current protection relay and under
, over voltage relay . if yes then symplestic matter where
is need of over and under vol,protection and where is under
and over current protection.

what is the response time of relays when a FAULT OCCURS IN A POWER SYSTEM?

2 Answers  

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What is the inside of ACB & VCB & SF6 breaker's pls tell me about this

2 Answers   Standard Chartered,

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What is pd controller?

0 Answers  

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Can 60 Hz transformer be used inplace of 50 hz transfromer?

1 Answers  

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how the harmonics are generated in transforemer?

5 Answers   IFFCO,

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what is the function of series reactor

3 Answers   Adhunik, INOX, RMSI,

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HOW COULD A SINGLE PHASE INDUCTION MOTOR ROTATE IN OPPOSITE DIRECTION???

3 Answers  

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can d.c.transformer exist? if yes then what its max. rating?

6 Answers  

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what kelvin's law ?

0 Answers  

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electrical knowelge

0 Answers  

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How to calculate the electrical load for a standard telecom BTS shelter and choose the DG set capacity for the same load?

0 Answers   Quippo,

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If we have two nodes A and B and Vab is the potential difference between these nodes then which node is called reference node a.node A b.node B c. Ground node

1 Answers  

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