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is any body explain me why return current in three phase power system is less then in a red, yellow, blue phases??? as we know Ir+Iy+Ib=In then why nutral wire has less then phase current????
2 5739I am B.E.electrical engineer having 7 years of experience in Transformer testing upto 315 MVA.I want to khow how I can get the 'Electrical Valuer' License.
2106how can we minimize the off load losses of a distribution transformer which is required to be energized 24x7 ?? capacity of the T/F is 1250 KVA and off load losses are around 2.0 KW.. can we use capacitor bank at the secondary of such a T/F to overcome off load losses? please elaborate briefly...thanks
2 4997an off load but energized 11/0.4 KV, 1250 KVA T/F has a power factor of 0.65(capacitive)..!! why is it so, though T/F being an inductive device ??
4 6033pls tell what are doing the three phase motor star and delta connetion with circuit diagram and control wiring .
2015what is the circulate the diesel in DG in side pls tell parts name and picture with circulate the diesel
1994
Explain in details how you would react to an unexpected incident when your supervisor or manager is not around to give instructions?
how to calculate the fault in substation
Why the width of the base region of a transistor is kept very small compared to other regions?
what is the difference between prime coat and tack coat in road construction
What are the causes of troubles in boiler during operations?
Crankcase oil mist detector
What is memristor? How many modes it works? What is its advantage?
1. What is differential relay? How it operates? 2.How to calculate the Short Circuit Impedance in Transformer? 3.What is the alternate solution for testing of polarity by using polarity tester while its milli ammeter does not works? 4. While testing the 33KV Busbar by using Hipot kit, what should be the test voltage we have to apply? 5. What is the procedure/activities to be taken to inject the current more than 2000A by using 2000A Loading Transformer? 6. Explain how you can give the overload setting to any Motor Protection Relay for a HT motors with formula and example? 7. Why restricted earth fault protection is needed? Why can’t differential Protection is sufficient? 8. What should be the minimum and maximum ohmic value for earthing? 9. Why DC Currents are not used in transformer? 10. What is the Frequency while we step up the voltage from 220V to 11KV? Is it possible? Explain it?
diff.between servo motor and ac motor
i want to go to US for Bachlore of computer science, I didn't appeared for SAT. my ielts scores are too low only 5.5 band and I am confused if VISA OFFICERS will ask why u hadn't given SAT. what i have to answer pl suggest?
sir i am apearing for nic exam.i dont know exam pattern.can you please send me some model papers
Name the boiler that does not need a steam drum.
briefly explain principle of resistance welding
What is rang ability?
How a conductivity sensor & analyzer work at boiler, whats the principle & science is beyond this,How conductivity sensor sence & convert signal & move toward analyzer & analyzer show reading in percent? also what is temperature compensate option in conductivity analyzer
