what is the diffrence between R Y B phase and why it is called RYB

5 Answers  

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Which motor runs on both ac and ac? a) dc series motor b) reluctance motor

2 Answers  

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How to connect a Restricted earth fault relay for 2000KVA,11/0.433 KV Distribution Transformer and What is the neutral CT ratio should be selelcted for 2000 MVA Transformer for estabilishing the Restricted earth fault relay

1 Answers  

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What are the difference between C-Curve and D-Curve for MCB's.

17 Answers   ABB, DLF, Essar, GK companies, Nissi Engineering Solution,

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ALONG WITH MEGGER TEST FOR CHECKING OF MOTOR ,WHY WE MEASURE FOR RESISTANCE AND INDUCTANCE?

4 Answers   L&T,

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What is difference between insulating medium and fault current interruption medium in a switching device.

0 Answers  

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Why the capacitor are connected in Delta(Three Phase) for power factor improvement ?

5 Answers   Hero Honda,

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dear all, in motor operation , motor is of 100 hp and bimetal relay setting is 130 amp, if relay is getting tripped on 120 amp balance current what can be the reason? Relay is newly replaced. I dont know but is there any frequency effect in thit case? Can frequency variation affect bimetal relay operation?

1 Answers  

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Totally how much power will be consumed in 1 hour cotinuous running of electric train engine?

1 Answers   L&T,

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WHAT ARE THE SITE TEST APPLIED ON A SURGE ARRESTORS? DO MEGGER TEST APPLIED ON SURGE ARRESTOR? IF YES THEN WHAT ARE THE ACCEPTED IR VALUE REQUIRED FOR SURGE ARRESTORS FOR VOLTAGE LEVEL 11KV, 33KV, 66KV 132KV, 220KV AND 400KV?

5 Answers  

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how can we avoid magnetostriction in transformer?describe the suitable methods.

3 Answers   Bhel,

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What is the effect of pi controller on the system performance?

0 Answers  

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