What is derating?, Why it is necessary, it is same for all means for drives, motors,and cables.

1 Answers  

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What safety precaution are to be taken for avoiding electric hazards ?

0 Answers  

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why, when birds sit on transmission lines or current wires doesn't get shock?

36 Answers   College School Exams Tests, Infosys,

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why the electrical plug point pin(earth) size in max

1 Answers   Autoneum Nittoku, Bajaj,

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I try to check the three phase voltage in multimeter, in 125A isolator switch incommer. first i touch R phase, and then i touch Y phase using multimeter, the moment i touched, it blasts and that moment i got blindness. multimeter selector position is correct(750V AC MODE AND RED PROBE WASS IN v AND BLACK PROBE WASS IN COM. MODE. COULD ANYBODY GIVE ANSWER FOR THIS TO AVOID FURTHER ACCIDENTS PLEASE?

2 Answers  

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What is the phase relationship between the primary and secondary voltages of a transformer?

0 Answers  

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What causal system?

1 Answers   NTPC,

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why in transformers voltage given is in the multiple of 11

3 Answers  

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how to reduce earth to neutral voltage?

8 Answers   Field Gun Factory,

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why starting current is high and resistance is almost 0 during the starting of motor dc motor...?

0 Answers  

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What is K-rated transformer? What is the use of it? What can be the size(pls provide calculation if possible) of K- factor transformer for 550kW,690V motor operating with drive (VFD)?

0 Answers  

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How can calculate ups battery back up time?

25 Answers   Cisco, Cooper, Pronet, Wipro,

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