what is positive,negative and zero sequence in power system?

4 Answers  

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What are the diferences between ELCB and RCCB

5 Answers   L&T,

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Are same transformer be employed for step up and step down services?

3 Answers  

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how starting current in motor is reduced in case of motor in star connection.

4 Answers   Adhunik,

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what is form factor?

3 Answers  

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hw to find transformer is in normal position? whether its in charged condition or not? except humming sound?

9 Answers   ABB,

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What is differance between alternator and generator?

4 Answers   IOCL,

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I need to compare the energy consumption of an industrial machine before and after improving. Shall I compare the apparent power or the active power? I know usually factories use compensated capacitors (or other similar components) to compensate the reactive power, so if I use the apparent power, it's not the real power consumed.

2 Answers  

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have u any web site who can give all electrical sum's to solve counting easy like how to convert 1kw=?Kva.

1 Answers   Marriott,

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What do you mean by reverse current braking of an induction motor?

1 Answers  

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What happens when the polarity changes in CT? Explain briefly?

8 Answers  

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what is Harmonic effect?

2 Answers  

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