how can we change the polarity of Alternating current rapidly? how frequency of ac can be controlled and changed easily?

0 Answers  

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what is the concept of directional power?

0 Answers  

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what are the types of Distribution transformer vector group please explain

7 Answers  

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what are the checks of diesel gensets

2 Answers   Hathway,

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The electromagnetic torque developed is proportional to what in a D.C series motor?

0 Answers   HPCL,

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Hello friends i am facing one problem in lighting panel. Frequently neutral link near to MCCB is burning(firing. What may be the reason for this one. Please answer me.

5 Answers  

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they transformer oil leakeage to beather tank and top parts . they protection relayes was not operated.what is the oil leakeage problem.

1 Answers  

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hey guys i recently saw a long transmission line in which a sort of balloons in red and white color were hanging at each section.do u have any idea why are they kept for?

3 Answers  

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wd do u understand by stablity of ps?

2 Answers   IOCL,

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what is the function of choke in tube

1 Answers  

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what is neutral ground resistance relay? how it is helpful in protecting system?

5 Answers  

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what is formula of dc current and resistance.

2 Answers  

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