what are the types of electromagnetic forces developed in practical transformer?

0 Answers   APC, BPCL Bharat Petroleum, Electrical Tech,

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Can a transformer designed for a particular voltage and frequency rating be used for different set of mentioned ratings? Assume that the winding does not get burnt because of overheating at higher voltage. If yes, then under which constraint it is possible?

1 Answers  

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why high speed tripping relay is used in protection circuit why not normal relay

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What is the armature mmf in a D.C machine?

0 Answers   HPCL,

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What is the difference between relays and contactor construction wise?

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why does fans rotate in anticlockwise direction?

1 Answers  

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I use 20 nos led tube 4feet, in pathway 100mtr approximate, so what size cable i use for lighting

0 Answers   Oman Cables Industry SAOG,

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How does a television work?

0 Answers   Siemens,

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how we start 40w tube light with 4 diodes,2capacitors,1 choke and without starter.(a product avilable in market which lights burnt tube lights also)

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what is the means of dedicate earthing?

2 Answers  

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What is the following which is printed on electrical appratuses like AC21 ,AC 23 , etc ?

1 Answers  

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What is difference between insulating medium and fault current interruption medium in a switching device.

0 Answers  

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