In India the supply voltage is 230 volt A.C. During the negative half cycle phase becomes neutral and neutral become phase? or what will happen during negative half cycle? how the electrons flow during positive and negative half cycle?

0 Answers   ITI,

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what type of oil is used in transformers? a)conduting b) insulating

25 Answers   ABB, LGS,

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What are the causes for the failures of sandwich type (Al) busducts?

0 Answers  

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What is application of isolation transformer & How it works.

2 Answers   BARC,

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What is the difference between MPCB and OLR?

11 Answers   ABB, Raj Agencies,

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why transformer cannot rotate though the princplebehind induction motor is similar to a transformer?

2 Answers   GE,

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Hello friends, Can anyone explain the concept of zones in Bus bar protection and how can we differentiate the main zone and check zone in Bus bar protection

1 Answers   ABB, NCC,

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how to calculate sizing of NGTR (Transformer rating,Loading resistor value and Current rating of resistor) and what is the X/R ratio. Details : 11kV,Capacitance 1.73532 micro farads,40kA for 1sec.

1 Answers   Bhel, Indorama, Power Grid,

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How to do stting of vl250 siemens MCCB

0 Answers   Qatar Steel,

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all interview questions with answers of ntpc (2000-2009

0 Answers   Hetero, NTPC,

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how we can calculate the efficiency of a diesel generator ?

0 Answers  

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What is critical disruptive voltage?

0 Answers  

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