Answer / pravin

if regulator is electronic then it save electricity but if
regulator is resistance base then it doesnt save.

Answer / guest

if regulator is electronics

why cannot we use a freuency more than 400hz is used in aircrafts?

1 Answers  

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What is the difference between Delta & Wye windings?

0 Answers  

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how can decide the current rating of oltc

0 Answers  

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What is master trip relay? How does it work?

1 Answers  

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when turbine trips generator will becomes induction motor or synchronous motor?

4 Answers   JSW,

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What is the method of Tan delta test for power Transformes and why it is required.

1 Answers  

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Sir we have 12.5 MVA(110/11KV) transformer (Y-Y) connected,which tripped showing earth fault,when we charged transformer it stood OK ,but on connecting 11 KV feeders it tripped showing earth fault.our service engineers found that the B phase and R phase phase connecting to neutral broken from HV OLTC(on load tap changer),and R phase and Neutral is ok.Dissolved gas analysis shows that accetline content is high,tan delta value is 12.My dout is it is an internal fault of transformer,why REF or diffrential relay is not acted?

1 Answers  

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two 100W/230V bulb are connected in series. what would be the voltage drop across 1 bulb

6 Answers  

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how the phase convertor changes the no. of phases

0 Answers  

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what is impedance in a transformer? how can i calculate it?

1 Answers  

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In radial network the source is fed from 1 end both ends at central

0 Answers  

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hello every one, what is the difference between the Kvar and farads, Rating on Power capacitor is for eg: x kvar, and normal capacitor is eg: x farads. what is the relation between these two?

3 Answers  

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