What is the name of process In VFD frequency are increase then voltage increase & frequency decrease then voltage decrease?

0 Answers  

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how to calculate capacitor bank value to maintain unity power factor plz xplain with some suitable xample?

4 Answers  

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what is the purpose of NGR?

25 Answers   Assam Electricals,

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How to run 1ph motor(230 VOLTS its full load amps is 4.5 ampa))with 480 volts main(we didn hav neutral)Thn we go for step down transformer.Our load 10 amps,so we conisder this amps in primary are secondary side

1 Answers  

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what is the form factor of DC voltage

5 Answers  

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how we control automatic generator i'e with to supply (main supply and local generator) when the main supply was break to supply the local supply automatically to begin supplying power.I now this control circuit is the combination of contactor time delay contactor switch and overload relay .but my question is how we combine those component thank you

0 Answers  

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sir i am apearing for nic exam.i dont know exam pattern.can you please send me some model papers

0 Answers  

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I am working in 600MW power plant currently in erection phase. I came along this term and want to know its meaning in simple language, consider me naive!?? All motors shall be of energy efficient type EFF-2 as per IS:12615/ equivalent IEC / International Standard.

1 Answers   Punj Lloyd Ltd,

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how many earthing required for ups, what should be the earth voltages

9 Answers   Juniper Networks,

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Why used in netural grounding transformer for netural side

2 Answers  

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why neutral and earth should not be connected on 3 phase 440v/50c/s supply at consumer side. where as on 25kv/ac/50c/s railway traction substation neutral and earth will be connected and track at substation. and track will act as neutral and earth. Reasons for this is needed urgently

4 Answers  

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how to carry out Magnetizing Current Test on Distribution transformer and what purpose we are doing this test.

1 Answers   CPCL,

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