Electrical Engineering Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

why the LED of my electrical meter glows even after the line has gone. what actually the reason?

3 6053

What is the high tension lines voltage and low tension lines voltage?33 kv is high tension line or low tension.

MPSEB,

1 8843

why a motor overheated stops to rotate ?????

1 2691

for which possible reasons a motor can fail to start??

CEB, Essar,

4 6762

In Panels Main Incomer considered should be TPN or FP?

2 5373

Why 5kv megger used to megger 6.6kv motor or 33kv transformer why not 500v?

2 8914

Why only plate(copper) Earth pit given for neutral earthing? why not pipe(G.I) Earth pit?

1 4913

what is the diference between the 4pole & 6pole DC Motors & what is advantage 6pole over the 4pole ?

1894

what is the diference between the 4pole & 6pole DC Motors & what is advantage 6pole over the 4pole ?

2011

what is the difference between 4pole & 6pole DC Motors & give advantage ?

1906

what is difference between fuse and circuit breaker?

4 8020

what happend if the protection ct is by mistake put instead of measuring ct & vice versa?

2 4346

what is the difference between normal motor and flame proof motor??

PI Industries, SRF,

1 32565

Is LV shorted in magnettic balance test?If yes why?

Hindalco,

2 5396

what is the lightning arrester rating for 3.3kv system voltage

1 4863

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Un-Answered Questions { Electrical Engineering }

WHAT IS DOL STARTER? HOW IT WORK? GIVE ITS CONTROL AND POWER DIAGRAM .

2171

how to find number of run cable laying[LT side] for transformer & alternator secondary side? [above condition for getting output power transformer to main panel side] give the example.

2074

help me with the question that might be ask on the interview for technical position

2290

design a 3 bit synchronous and asynchronous counter using T- flipflop

2007

how net resistance islow in star connection and viseversa in delta connection...? if anybody could explain in detail it wud be helpful.

1605

1 hp is equal to how much watt?

1263

What is the Designing & Selection Procedure for a DG/Transormer of rated capacity?

2183

What happens when two positively charged material is placed together?

1137

Why in metering Ct for ammeters ct secondary side is grounded for each Ct but not in case of CBCT (Core balance current transformer)..kindly some1 highlights the reason..is it because net flux is zero?

1431

What is the relation between frequency and motor rpm?

1857

As we use capacitor bank in 3ph ckt to improve PF, can we use capacitor in single ph domestric use, in house we have Fan,Mixer,electric cooker,iron,tube choke they also lag the system,because it is inductive load. if it is possible to improve PF of single ph system-- if yes- type of capacitor to be used,connection diagram, working in detail. if no-- list it.

1776

which is the most advanced form of SF6 BREAKER?Can we use other gases to quench the arc?

2045

What is core CT & it's function?

2070

According to conduit size which size wiring & how many wires can we provide wires in conduit & how can we select conduit size accordingly?

1900

Comment on the working principle of operation of a single-phase transformer.

1199

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