what is the difference between relay and a contactor.

5 Answers   Siemens,

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Draw the DOL starter and star delta starter drawing?

0 Answers   Danfoss,

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How to calculate PF capactors for a connected load?

2 Answers   FD, Power World,

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How can you calculate the size of the down conductor cable for the lightning protection system. Is 70mm2 cable can replace 95mm 2 bare copper cable when the copper tape size is 25Wx3 thk mm.

0 Answers  

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What is the SPEED of electricity?

1 Answers  

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how to test the ht machines?

0 Answers   ONGC,

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what is cause of static electricity? I experience shock when i touch metal equipment in a room ,furher check shows earth leakage showing 80ma at the DB near to the 400 MCCB?

0 Answers  

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define displacement & magnitude ?

0 Answers  

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why ct is testing using dc.. y cant we use AC insted of dc on POLARITY TEST.

6 Answers  

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what is meant by Is limiter?what is the use of current limiters in electrical ditribution network?

2 Answers  

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neutral earth resistance testing is it possible for transformer while in load condition

0 Answers  

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how we masure a cuurrent?

5 Answers  

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