What is the use of 1:1 isolation t/f in any circuit...?

3 Answers  

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what purose of the double circuit transmission line phase of the line phase changed for circuit-1 for Circuit-2 R-Y-B B-Y-R

0 Answers   NCC,

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what is difference between start imitation and start interlock for 3 phase motor protection ?

2 Answers   OPS,

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Dear All, I am new in construction company , my boss ask a question at time of interview , If we have 60MW generation and Single Power Transformer step-up we have. if CMR 50/60MVA , ONAN, ONAF respectively , is it sufficient or not ? for that much power to transfer,

0 Answers  

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Why Lighting transformers are used? what will be the current if lightings connected through direct raw power?

1 Answers   BMM,

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we have one pumping station and 4.6 MW 7 no.s synchronous motors.so there is no required HT capacitor to improve power factor.But we have two no.s of 25 Mva power transformer connect to distribute the power for motors connect with 220 kv line.So i have required the HT capacitor to improve power factor at HT side i mean power transformer bus side.So please suggest how much HT capacitor banks required for same.

1 Answers  

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What will be the output of an alternator ,if the field current is single phase ac supply.

1 Answers   DRDO,

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What are the different condition monitoring techniques for a motor?

1 Answers   DAE,

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where solid grounding and where grounding through ngr done and why?

0 Answers   NTPC,

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what are the current specifications of bus ducts ? i ve seen in IPBD bth 22000 A and 1500 A in 400 kv switchyard . why it is so??

1 Answers  

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what happens when the transformer is connected to DC supply?

4 Answers  

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Define peak overshoot.

0 Answers  

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