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is a normal conductor can be used a core in windings if not what is the winding core speciality.
2 4813can we light the mercury vapour (tube light)with out a 1).starter and 2).choke in our homes if yes explain how?
5 8222How to calculate the KA rating for a circuit breaker if we know the KVA rating of the generator feeding it?
2 190231. 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?
1 233311. 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 583721. 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 9705what is the difference between power transformer & distribution transformer and what are their ratings respectively?
4 8436sigal 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 5971Post New Electrical Engineering Questions
Why neutral point is consider as zero potential?
hai...... tis is Hemanth. jst now completed electrical engineering... i wanna to apper for ap tranco exam... plzz send me the previous q's paper link......thanx in advance.
hello!my name is sheikh iam preparing for indian engineering servieces,please send me the old question papers..to sheikhshaazforjobs@gmail.com
Hi all I had applied for the RRB test in the ELECRICAL category. I would be pleased if any of you can sent me previous year question papers. Please forward the question papers to varshashahi@yahoo.com Thanks and regards Varsha
pls someone send me sample question papers along with the key.thanks in advance
Draw a block diagramof Three UPS systems connected in Parallel mode?
where are the circulat the diesel in DG parts name with pictue
what is a reactive power? what is the relation with power factor?
1)how to reduce the value of tan delta of trasformer and CB,bushing,CT&PT,CVT ? 2)how to reduce the resistance of CB contact and its operating time? 3)plz.....send me the project report on conditioning and monitoring of substation equipment on my email id (gusaiyogendra03@gmail.com)
What was your role in the silicon evaluation/product ramp? What tools did you use?
Can you used moeller lzm1 mccb in a dc system with 125vdc and 20ka short circuit current , beside is it have 24 or 48 volt shunt ? Beside how long current can through from An MCB shunt contacts? (like Z7-AS 24 V)?
i want bhel placement paper for electrical if anybody having pl send to my id kavitha867@myway.com immediately
Define the overload capacity of the motor?
How to calculate VCB rating for 33KV ,25 MW Power line?
Please sent me some previous year question papers of BSNL-JTO telecom and RRB in ELectrical Engineering to varshashahi@yahoo.com
