Why dc supply is used for closing and tripping coil of ht breakers. What happen if we use only ups ac supply only.

12 Answers   ACC, JLL, ZETDC,

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Why the wave trap is put in Y phse only in switchyard?why not in other phases?

1 Answers   IAG Automation, REL,

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how to determine capacitor bank capacity of one plant..

2 Answers   Dalkia, SPDC,

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Is it possible to measure correct value of earth resistance & cable insulation ristance with out disconncting earth lead & both sides of cable ends? If not, any other method to measure ER & CIR with out disconneting from the system.

0 Answers   HAL,

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How to take the Vector Group Test in Transformer? What is the purpose of doing Vector Group Test?

2 Answers  

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Mention the difference between Analogue and Digital circuit?

0 Answers  

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what is CT class? depending upon which it is classified?

3 Answers   Siemens,

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why the single phse machine can not run by the three phase supply.

2 Answers  

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Dear all, kindly give me the details of leectrical design engineer course details/institute in hyderabad /any where in india.

1 Answers   Reliance,

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why DG,Transformer,UPS capacity will be tell in KVA but not in KW?

4 Answers   Godrej,

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why are u join ntpc

0 Answers   NTPC,

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CAN ANY ONE EXPLAIN THE KNEE VOLTAGE OF THE CT?

3 Answers  

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