How to calculate no of Lighning arrestors are required for protecting 50mX 50m*20m cubical building and locations of LA?

0 Answers   HAL,

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Dear Brother can u tell the proper size selection of cable & the fault level calculation of braker, busbar etc. pls mail me at azeemk30@gmail.com

0 Answers  

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what happens to the supply voltage if there is any change in frequency?

1 Answers   Gridco,

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How it can worked plc based electrical system And which type of software using.

0 Answers   ITC Infotech,

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How PSV sizing being done

0 Answers  

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What is the application of Nitrogen Injection system in Transformer Protection?

1 Answers   HPL,

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we all know voltage is a force(emf), and the force always devides if 2 or more than2 loads are there but why does the voltage remains same is parallel, it must devide na ???

0 Answers   NTPC,

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In a three phase transformer(delta/star connected)when i touch one end of the bulb in any one phase and other end to earth..will the bulb glow or not..if not why?..i'm touching the bulb in star connected side...

6 Answers  

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want happens when a dc is given to a commutator

2 Answers  

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While connecting the flood light plug on to the 415 V distribution panel,there was spark and the cable got burnt. Three ignitors of the flood light also burnt of. The lamps are of 400 W (total 6 lamps) connected through 1.5 mm2 cable. The plug was immediately removed from the circuit. There was a 30 mA RCD connected and a 250 A MCCB; however both did not trip. What could be the possible reasons for the circuit devices not to trip?Can someone assist please. Additional info if needed can be provided.

2 Answers  

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would you please give me any idea about the BARC interview question on electrical? i have an interview on 1st july.....plz hlp me.......its urgent......

0 Answers   BARC,

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How to improve fuel cell in a distribution system?

0 Answers  

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