state the working of discharge lamp?

1 Answers  

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why three phase system is not preferred in aircrafts power cckts if yes than explain reasons?

3 Answers  

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It is a three inch fan and i want it to rotate to other direction .I've tried cutting the wire and reconnecting them inverse like black to white and white to black ,but it won't start rotating when i plug it in that way.And then it works again when i rejoin the wire to the way it is. I don't know what causing the problem.Is there anyone familiar with these small mortor?Any suggestion would be appreciated.Thanks!! http://i296.photobucket.com/albums/mm163/sasukebloodwheel/110527-105859.jpg

2 Answers  

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While testing a ZCT what parameters have to check or measure?

1 Answers   Indian Railways,

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If I fill the form of engineering services and I left the exam de to navoidable reasons . Will it counts my one attempt

2 Answers  

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I have one ct of ratio 3000-2000/1 Amp its knee point voltage mentioned on name plate is 500-333/30mA-50mA at Vk/2. in secondary box there is three terminal named 1S1, 1S2, 1S3 then on which terminal obtained the knee point voltage ie 1S1-1S2 OR 1S1-1S3 & also specify the knee point voltage for the ratio 3000 from name plate.

1 Answers  

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How to calculate no of Lighning arrestors are required for protecting 50mX 50m*20m cubical building and locations of LA?

1 Answers   HAL,

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What is Creepage distance?

1 Answers  

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What voltage is used in Directional earth fault relay? and why?

5 Answers   L&T,

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Two alternators say 1 & 2 are poised to parallel operation. But at the time of paralleing alternator 2 gets out of the system by tripping Earth fault relay. Please send me reply why this is happening?

2 Answers  

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why so voltage is same in parallel circuits and current is same in series ckt?

3 Answers  

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what is the mean of"turbo" in turbo alternator???

1 Answers   CCCL,

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