Electrical Engineering Interview Questions
Questions Answers Views Company eMail

what is the function of buchhos rely in transformer

5 4897

what is the function of conservater in transformer

3 9350

what is the function of cooling tubes in transformer

4 16806




kindly tell me how the load on generator increase by just increasing the fuel of prime mover, as if for exampple 20 MW gen set is synchronized the load ramps from zero to 20 MW gradully and during this procress only fuel of prime mover increases. Which thing determines the load on generator with respect to fuel

Birla,

4 11999

Hi, Next week Iam appearing RRB exam for section engineer. So help me to get modal question papers for this position. Iam very thankful to you. Whether question will be fully techanical format or general form. Please give me a details regarding this exam.

750

Why the dc voltage drop during starting of emergency lube oil pump? The Voltage drop from 135kv to 125 kv for one min. before re-establish to 135kv?

1029

Differenciate between circuit wiring and sub main wiring with illustrations

MU,

1020

3. What is Impedance Voltage in Transformer?

L&T, Torrent Power, KESC,

16 93999




5. What is PMG in Alternators?

L&T,

11 36018

Why restricted earth fault protection is needed? Why can’t differential Protection is sufficient?

1023

why are you interested in joining in core company instead of joing in software company

11 18504

how to test vector groups in transformer differential relay.

1 2037

Is it true that IPT are more accurate than CVT for Measuring purpose?

2 2487

is emf is indued if dc is passed through coil

5 4017

why transformer not work in dc

16 20889


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Un-Answered Questions { Electrical Engineering }

1.what is difference in maintain Hz again Hz in USA ? 2.how to calculate the battery AH? 3.why are yearly maintained in transformer how many tests in required?

1325


What is notching in dc machine?

720


I want to ask that is there any relation between current denesity of copper and material purity. also is ther any standard which defines the standard current denesity of material.

594


5- What is the task (function) of the excitation and isolation transformers in power plant? 6- What is the task (function) of LCI (A), LCI (B) and LCI (COS) in power plant? : LCI (A) and LCI(B) are load commutating inverter for generator turbine starting. , LCI (COS) is load commutating inverter change over switch

2483


what are the major & minor faults that occur in an inverter and in UPS ? And how to repair and resolve them ?

978






I am using submission of two ct in one and half scheme for 67/67N protection. Both CTs star point is grounded separately near ct box.Will two point ground give wrong tripping to 67/67N during fault or no matter.

874


what r the checklist while installing a 380 kva DG set

2612


what are the standard IR values should be of R-E, Y-E, B-E, R-Y, Y-B, B-R of VCB in closed condition and in open condition for 500KVA & 1000KVA transformers. and what is the acceptable range when tested by 5000V megger.

900


Match the following a)(X'+Y') b)X'Y' C)XY 1)NAND 2)NOR 3)Carry

729


why are u join ntpc

955


sir iam a 3rd yr eee student.no core company comes for recruitment to our college.my aim is to be placed in l and t.tell me the procedures.

647


what is the chemical name and formula of refrigarent R-134a.

978


how to decide no of electrodes for 1600A LT Main incomer panel

475


What is difference between Sample test and Routine test in safety standard?

515


I AM A ELECTRICAL PANEL BOARD DESIGN ENGINEER.IF I GO ANY INTERVIEW ,TECHNICALLY WHAT ARE QUESTIONS I WILL FACE FROM INTERVIEWER?

9713