how to calculate magnetic force genrated by a coil ?

0 Answers   L&T,

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How Can I calculate for the photometrics requirements for a street lighting? Data given are: 45 units of 6 meter light pole with 150 watts metal halide lamp, 220 volts and installed in a promenade area.

0 Answers  

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how the magnetic flux is said to be rotating & alternating?

4 Answers  

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In Transformer testing at Shop test we normally test for vector group, open ckt.,short ckt. but what are the other test performed for transformer once it reaches at site.For e.g:if the transformer is dry having rating 1000KVA?

2 Answers  

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what is the difference between contactors & relay.

2 Answers  

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Why neutral has to switch on-off with phase in TN IT TT systems i.e neutral should be taken as fourth pole

1 Answers  

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How to work star delts method in the case of single phase motor?

4 Answers   Siemens,

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state the disadvantages of carbon filament???

0 Answers  

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what is the difference between earthing and grounding?

6 Answers   Bhel, Wipro,

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what is the use of switch disconnector fuse

1 Answers  

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what is the difference between thermal magnetic release and microprocessor based release breakers. what are the advantages of latter over the first one...

5 Answers   Jackson, Karthik Industries, McD BERL, TCS,

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what is the roll of power factor in induction motor.

3 Answers   Hindalco,

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