Answer / ujwala

industrial frantically machines/items:
counter-weight elevator water wheel

commerce/realistically trade:
balacne scale

weapons and war machines:
catapults ballista trebuchet crossbow fire-siphon

rich people's toys:
music box

expressly cutting edge devices:
music box (again)

what purpose of the percentage impendance in transformer

3 Answers  

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Which of the following connection is best suited for 3-ph, 4 wire system A delta-delta B star-star C delta-star D star-delta

2 Answers  

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What are the two basic types of transformers?

0 Answers  

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How to test and satisfy the conditions of the vector group YNd1 for power transformer?

1 Answers   Areva,

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what is the difference between STAR and DELTA connection and application wise how it can be utilizedd ???

1 Answers  

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We have 11kV/110V three phase indoor potential transformer in 66/11kV Sub-station, where the failure of PT is frequently happening and the rating of the PT is 0.2 class accuracy, with primary star and seconday (two cores) star connected. Some experts has suggested to not to connect the PT Primary neutral to the ground because when transformer neutal NCT connection is loose; the faulty current will flow through the PT primary neutral, resulting into failure of PT. My question is: Is it necessary to remove the primary neutral connection of the PT from ground? if not, what would be the reason for failure of PT. Please guide me.

2 Answers   KPTCL,

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how much distance is required for earth pit to earth pit in substation???

3 Answers   Divis Laboratories,

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What is the deference between earth fault & earth leakage

1 Answers  

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why tube light flicks??

1 Answers  

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what are the types of Distribution transformer vector group please explain

7 Answers  

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what is mean by descripiency relay? & wht is its ansi code?

0 Answers  

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what is the function of Moulded case circuit breaker, why it is called Moulded?

0 Answers  

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