what is the working principle of induction motor

2 Answers  

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If AVR fails in DG set what will be the affect?

17 Answers   GoodYear, Hotline Glass, HSL,

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why overcurrent fault occurs in power system.

1 Answers  

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corona happens more in summer or winter?

3 Answers   MAHINDRA,

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HOW MUCH CURRENT DOES SYNCHRONOUS MOTOR TAKES AT SYNCHRONOUS SPEED IN NO LOAD CONDITION ?

0 Answers  

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anyone please send transformer parameter design formulas & details of tap changer ? plz i have interview this week its more helpful for me ?

0 Answers  

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One of our gas turbine generator unit "1st stage rotor ground fault" alarm was occured several times. we tried to measure some voltage vulue ground fault protection relay (UNS3020a made by ABB and we measured the value of: Ground: 0.9VDC 5V: 5.8VDC 24V: 23VDC u+: 300 – 350mVAC Rf1: 17.5mVAC Rf2: 17.6mVAC The unit still running and the alarm was reset. As of 6pm yesterday and unitl now no alarm happened again. I our protection relay was defective?

1 Answers  

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Hi Recently I got one formula that is Impedence of Xformer = Rated KVA/Root 3 * secondry voltage OF Xformer. Is it Right??????

2 Answers  

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What Maximam Gap Taibaar & Bush

0 Answers   Bajaj,

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What are the different types of VVVF Drive ?

2 Answers  

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Why transformer, generator, ups rating kva?

2 Answers  

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what is defference by mcb,mccb and mpcb

4 Answers   Bhel,

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