Answer / visal

..property by which certain amount of excitation remains back in the substance even after the removal of magnets..
due to the hysteresis property of magnetism

What is the diameter of electromagnetic field around a 11000/415v transformer ? Dose it affect people who live 3-4 meter beside it?

0 Answers  

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why we use battery source for current transformer polarity testing?

2 Answers  

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I have 4 DG set with 1500KVA rating. system breakers are 11KV & alternator are 415 Volts. i want to Know what is max. resistance for body earthing & 415 & 11KV V Neuteal earthing. my fault current is 14 times for 2 sec.

2 Answers  

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why should a transformer be never connected to dc supply

5 Answers  

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why ohms law does not obey semi-conducters?

2 Answers  

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what purpose to use excaiter in DG.?

0 Answers   TATA,

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funtion of choke

4 Answers   L&T,

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why double earthing is required for welding machine & electrical tools.

7 Answers  

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give 5 differences between relay and contactor

1 Answers   Texas,

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how to make a solar panel? why solar panel cell connected to serious?

1 Answers  

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how long will take to burst/damage for a CT when secondary in open condition? Experienced: During switchgear testing(Primary current injection test) some of the CT are in open condition, but nothing happen's why?

1 Answers  

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what kind of motors are used in the winders of coal field?and what are the various methods of it's speed control?

1 Answers   Monnet,

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