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is a normal conductor can be used a core in windings if not what is the winding core speciality.
2 4649can we light the mercury vapour (tube light)with out a 1).starter and 2).choke in our homes if yes explain how?
5 7998How to calculate the KA rating for a circuit breaker if we know the KVA rating of the generator feeding it?
2 188321. 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?
227711. As per the theory current doesn’t flows in Neutral, but practically it is not applicable, explain why? 12. How to take the Vector Group Test in Transformer? What is the purpose of doing Vector Group Test? 13. Why the transmission lines are in 11kV, 22kV, 33kv, and why not 10kV, 20kV, 30kV? 14. Why do we generate 3 Phase AC Supply? It is possible to generate 4 Phase and 5 Phase explain it? 15. Explain why the Voltage drop will happen in 3 Phase line? 16. What is the equipment used to control the generator output? 17. What are the factors to be considered during the Synchronization? 18. What should be value of Circuit breaker operating time and tripping time? 19. Why the CT Secondary is rated as 5A generally? 20. At which time Synchronous generator act as a Synchronous Condenser?
1 573421. What is the purpose of taking Capacitance and Tan Delta Test in Transformer bushing? 22. What are the protections to be used for Generator? 23. Draw the vector diagram and condition for the following: 1) Dyn1 2) Ynd0 3) YnYn0 24. What happens when the polarity changes in CT? Explain briefly? 25. Explain the Term in CT Name Plate – Class: 5P10
3 9482what is the difference between power transformer & distribution transformer and what are their ratings respectively?
4 8233sigal phase supply is 230 v ac two phase supply is 415 v ac then why three phase supply having supply is 415 v ac why not 690v ac
2 5831Post New Electrical Engineering Questions
why transformer tank is in rectangular shape what happen when it is in step shape
what is the difference between an alternator and a synchronous motor
what is formula to cal cute earth pit numbers and size of earth strip used in earthing?
How does the phase sequence controller works, how it identifies the phases? confirm working principle
Why temperature rise is conducted in bus bars and isolators?
draw the block diagram of fire alarm?
is it possible to turn on the single phase star delta on delay timer using 24 v dc ?
any one can explain what is the size of pvc,armoured, various sizes of powr cable dia?
i need the curve duty cycle and amper for (150 kva @50% dyty cycle) transformer turn ratio :19 and vin 400
What is the difference between cylindrical-type and sandwich-type winding?
explain types of electric welding and its applications
After taking shutdown of 11kv feeder, if you see 5kv by phasing stick in the cable side, is it possible to close earth switch in cable.
what is active power & reactive power?
what is the IEC standard for Power Cable installation in onshore (like in direct buried ground or above groung)
for 100 HP Induction motor service factor is 1.2(SF) we placed a VFD at the motor side load is balance with 0.3 Amp's Phase to Phase but at incoming of VFD load is un-balance with 10 to 20 Amp's what will be cause of load un balance
