Answer Posted / rajesh

B exam pass next?

why using transformer and thyristor switch in 3 phase apfc panel

2883

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1.Can we use 6.6/11KV 300sq mm xlpe 3core cable for LT use (415 Volt). 2. If we use it for LT then what is the current rating

1769

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We are planning to synchronized DG's with our captive plant in the event of black start of plant, but before sync we checked voltage of DG with our plant voltage and it varies from 5 V to 450 V. So in this condition how we can sync DG with plant ?

1645

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any earth foult trip the relay but in welding time not trip by earth foult

3179

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how many current required for hypo test

1975

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the site measured knee point voltage of protection class CTs should be greater than rated knee point voltage? what about meetering class CTs. Should it be below the rated knee point voltage?

2290

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How to calculate the Harmonics losses in terms of cost/unit.

2031

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what & how to check the lightning arrester

1919

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i have total 8 dg sets for synchronizing and 2 buscoupler,1 sectoin dg no 1,2,3,and 2 sectoin dg no 4,5,6,and last section dg no 7,8 ....if buscupler no 1 and 2 is off mode ..than dg no 1,2,3,will synchroniz of another dg sets?

1816

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In a voltage-controlled current source A A current booster is never used B The load is always floated C A stiff current source drives the load D The load current equals Isc

1893

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what is the working principle of a DG Set, Alternator, & exiter

10221

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sir i ve applied for hindustan petroleum and power grid india ltd..and the exams on feb 22.can you pls send model papers and tell how to prepare for those.i need to get into any of these for sure.....

2181

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what is the Transformer Impedence?How can calculate?

2099

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How much kv gas generator is needed to run 2 hp and 1 hp airconditioners, plus a refrigerator and 4 Tvs

5187

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How can we calculate cable size in Low voltage & high voltage

1617

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