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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

what is automatic voltage regulator and it is used?

HAL,

2 2543

Questions :- HR- Q.1 about yourself & family background ? Q.2 Why u choose Power sector as ur carrier starting not any other sector ?? Q. 3 What think abt NTPC ? Techincal Questions:- Q.1 about Vocational Training……What u did , see the main equipments….etc Q.2 Why a transformer Noise during its running condition ? Q.3 about transformer oil material & Test name for the measurement of its dielectric strength & wht will u do if its dielectric strength goes low ? ……..some discussion type ? Q.4 What is relation between transmission lines & Communication lines ? Q.5 Which Machine u will prefer to use at a place where flammable gases are coming out & why ? Q.6 how fault in an electric system is detected & hw protection of equipments is done ? Q.7 Why we didn’t feel electric shock in an electric train ?? Q.8 Anything u want to ask from us ??

Akona Engineering, Bhel, BSES, Cranex, DRDO, JCB, NTPC,

44 28378

WILL THE PERCENTAGE IMPEDENCE FOR A ONAN TRANSFORMEER BE THE SAME COMPARED TO ONAF TRANSFORMER OF SAME RATING???

5 7670

Why don't we provide SURGE ARRESTORS for Transformer feeders?

5 6451

How does "OUT OF STEP" relay ,for Synchronous motor protection, work?

3356

Usually in the L & T make MCC feeders' power circuit,we have BMR after the MAIN CONTACTOR.,can we interchange their position, keeping the control logic same???

1157

How does a VOLTAGE OPERATED DIFFERENTIAL RELAY work??

2 5972

Why do we give DC excitation to AC Synchronous motor??

Lance, MBM, Polycab,

9 30575

How is the percentage impedence of a transformer fixed at design stage???

1086

Why can't we take NO LOAD TRIAL of motors having V1 mounting??

1049

Why is it that variation allowed in supply voltage to motors is (+ or -)10 %, whereas that in frequency is (+ or - )5 %

3 4473

after how many spot we must chang secondry cable in portable spot welding gun?

1012

What is the difference between MCCB, ACB & VCB

7 15075

what is mean by NTPC?,why didn't electric shock in train?

7 10218

wat's the procedure to take short circuit current for cable selection

1086


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Un-Answered Questions { Electrical Engineering }

Why 9KV surge arrester having 7.65KV of MCOV?

581


Please clarify, 1. Is it required to lay two runs of GI wire along with Armoured LT cable if it is laid between one big mains (63Amps TPN SDF) to small main (32A TPN SDF) with proper glanding termination? 2. If the armoured cable with proper glanding is laid from DB to CNC machine, is it required to run two runs of body earthing to the Machine from DB? 3.If the armoured cable with proper glanding is laid from Substation to Hangar, distance is approx. 100 mtrs, is it required to do earthing at shop area though the primary termination at substation is earthed through gland.

1116


When and where resistance earthing is used ? How to calculate the time constant for earth fault

913


sir i ve applied for hindustan petroleum and power grid india ltd..and the exams on feb 22.can you pls send model papers and tell how to prepare for those.i need to get into any of these for sure.....

1227


what is a types of short circuit and what is a types of distance protection tests

1230






Dry type transformers

905


How test for Ddo vector group test condition?

1316


explain safety measures in alternator?

865




1142


How to calculate the size of earth cable to earth the neutral of UPS ?

890


what is mean by transition resistance of transformer?

3249


What is the ideal position cooling fan inside the dc motor?

1159


what is meant by LCR meter? where its useful ?

1083


How can we increase fuel-power ratio of any DG set?

891


What consists of 2 or more thermocouples to be connented series?

1054