Answer / ibrahim+8801671121852

lighting arrester is used mainly for balancing the voltages
of any building. when lit comes from the sky the voltages of
any houses is rises. to aviod this rising voltage we used
lighting arrester. but if it passed 3.3kv it doesn't work.
or it would be burned.

why D.C excitation is given to sunchronous motor?

6 Answers  

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findout of current?details 440v,3phase,085pf,hp-5

9 Answers  

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How we can calc. the Backup time of a battery Bank???

6 Answers   Emerson,

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how meger function

0 Answers  

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What is meant by term Back to back in HVDC transmission?

1 Answers   SSC,

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The formular of how to calculate a cross sectional cable to feed an electric motor. Examle: 15KW, 26.1A, 415V. Calculate the cable size in mm2

3 Answers   Sona,

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Why we are mostly using a single 3-phase transformer instead of three 1-phase transformers?

7 Answers  

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when voltage increases current decreases & vice versa why it is so?

3 Answers  

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Can we parallel two grid with different incoming voltage. Ex.let say one grid is 132kv and another is 220kv.

2 Answers  

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How to check the LM324 Ic

0 Answers  

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What is the formula formula for Busbar sizing and what are the things to be consider for Busbar Calculation?

0 Answers   ABB, APL,

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what are the protecyion of transformer & generators

0 Answers  

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