Answer / loboreliance2003

The DC voltage rating for high voltage insulation does not
take into account RF coupling of high voltage AC Signals
through the insulation to grounded objects. It is found
that high voltage wire insulation must be de-rated by
approx. a factor of four for the high voltage frequency
levels used. For instance, to run a 10KV triangle wave at
1KHZ requires insulation on the test cables with a DC
rating of at least 40KV.

why Current is lead 90 degree and voltage is lag 90 degree in a capacitor.? why Current is lag 90 degree and voltage is lead 90 degree in an inductor.?

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can we use ZNyn11 transformer instead of Dyn11 transformer in distribution for effectively eliminating harmonics from the industrial loads.

0 Answers   DEWA,

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HOW many type of Circut Breaker in the world used in 400 kv substation?

14 Answers   Power Grid,

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how does a current carrying conductor posess a magnetic field. what is the reason for the production of electro magnetic field around the conductor

2 Answers   Vizag Steel,

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why AC voltage source are generate as 50 Hz ?

4 Answers  

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without name plate detail of blower how we can find out the HP & Rpm ? the input voltage is 230v single phase

1 Answers  

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we r having 3 core 3 1/2, 4 core cables how we can know this cable has to be used for this purpose?

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Maximum efficiency occurs in electrical machines is at i)Full load,ii)50% of full load,iii)Near full load,iv)None of these

1 Answers   IFFCO,

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can any one suggest paper presentation topies for electrical engg?

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How to work meggar?

0 Answers   Anand I-Power,

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I have a table fan of Rallifan Make. When I overhauled it I found a stator winding and an aluminum die cast rotor. So it is supposed that it is a 1 phase induction motor. But there are only two terminals coming out and there is no capacitor. Can any one tell how this motor works? or which type of this motor is?

1 Answers  

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How to select a transformer group to connect a 0,433 KV generation with 33 KV grid in bi directional flow of current

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