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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

is a normal conductor can be used a core in windings if not what is the winding core speciality.

2 4770

can we light the mercury vapour (tube light)with out a 1).starter and 2).choke in our homes if yes explain how?

5 8169

why most of the induction motors are delta connected?

7 28153

Can we connect two or more energy meters/Amp meters on one CT set(Three phase).

Parle, Watermark Engineering,

5 28427

How to calculate the actual 3phase power, if the load current of each phase is not balanced

2 5372

why air handling unit interloking in case of fire

3 6484

How to calculate the KA rating for a circuit breaker if we know the KVA rating of the generator feeding it?

2 18985

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?

2324

11. 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 5810

21. 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 9658

How to calculate cable size in sq units based on motor rating is KW

2 6842

what is the full form of XLPE adn there use.

Voltas,

4 31073

what is the difference between power transformer & distribution transformer and what are their ratings respectively?

4 8379

what happen if transformer neutral not earth

2 7596

sigal 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 5951


Post New Electrical Engineering Questions

Un-Answered Questions { Electrical Engineering }

Explain few advantages of electric traction system?

1194


what is the difference between delta delta and star delta connection transformer? why we use delta delta transformer since it need earthing transformer for grounding?

2141


what is the meaning of vcc

2573


WHAT IS AIR GAP VALUE IN MM FOR A 11KV BUSHING OF 11KV/440V DISTRIBUTION TRANSFORMER. AND AIR GAP VALUE OF 25 KV BUSHING OF AT TRANSFORMER OF 25 KV TRACTION. WHAT IS THE CALCULATION FOR THE AIR GAP PERMITTED FOR BUSHINGS AT DIFFERENT VOLTAGES.

3533


Disadventage of cable-gland earthing if any ?

2312


What is meaning of out of phase (making & breaking) capacity And how to calculate

2356


what is the advantage of connecting capacitors in delta than in star?

2162


Write the force balance equation of ideal dashpot element.

1389


How i can decide that HVDC line is best for transmission.

1973


can u tell me the promotion from oiller to enginer

1993


what is motor capacity of 80TR chiller? and also say what is the formula related temperature, motor capacity, TR?

2328


IF ANYONE HAVE ANY QUESTION ASK ME AT MY MAIL anmol.bhardwaj5@gmail.com

2146


hi friends this is a newcomer in your community of enthusiastic peoples. i am preparing for SSC (CPWD JUNIOE ENGG EXAM FOR ELECTRICAL) pls guide me on the same how to crack it? PLS LET ME KNOW IS ANYONE THERE WHO PASED IT? CAN I GET THE QUESTION PAPERS OF PREVIOUS EXAMINATIONS?

2296


i am gng to visa interview this july i have 4 backlogs gre 1010,toefl 75,pls give me the tips pls pls

2215


Name two types of electrical analogous for mechanical system.

1280