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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

why white color LED light is not possible?

 1 3367

operation principle of a generator? Gss, Diesel and HFO which is better and why?

 1 4223

I do wonder why current is present in neutral wire?i check single phase lead current feeding air conditioner...on its phase its current was 10A while same was 10A in neutral...as we know in neutral voltage is zero so if voltage is zero then how current appears on amp meter? my second observation is (just imagination)when I touch phase wire it give me shock but when i touch neutral nothing happens although as above its carrying current(amps) third but with same logic...as in simple Alternate current sine curve there is + and there is negative peak.means every time phase changing so how come every time same phase and same neutral stand (pardon for english mistakes)

 1 3321

what is mean by flux

2 3639

How many loops can be provided in a circuit as per IS rules.?

 1 3011

how i meggar value of 11kv alternator winding.and with meggar.

 1 3661

what is the purpose of using filters in a protective relaying scheme?

 1747

How we can find the regulation of transformer?

 2 3159

Why selected cable colour red yellow and blue in 3 phase Electrical system?

Crompton Greaves, Essar, Gridco,

9 21167

What difference between voltage and current

 5 5294

What is the Basic Difference bitween Long Shunt Connection and Short Shunt Connection in DC Generator?

 1794

what iz second and fifth hormonics please explain

Satia,

1 2794

why the generator operating along with the infinte bus bar should never be under_excited?

 1 2910

how much GROUND & NEUTRAL VOLT maintain in data center.

 1520

how calculated Transformer losses.

 1564

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Un-Answered Questions { Electrical Engineering }

What is difference between Over Current & Earth Fault protection?

1925

hi I have done 3 yrs diploma in electrical engg after 10+2. I have 16 years of work experience into design proposals sales and engg application development in LV/MV swithcgear and sub station automation field. I want to apply for immigration to new zealand but I am not sure whether I qualify or not since I dont have a degree. Can anyone advice? Thanks Riz

1825

Draw a block diagramof Three UPS systems connected in Parallel mode?

1655

what is the difference b/w ATS and HTS?

1693

Can any one provide the inspection procedure of MIMIC for VFD panel? Details: If someone wants to have a mimic in the VFD panel what are inputs considered for the mimic(like on,off,trip) whether we are able to add speed variation in the mimic(if so how can we get) and what are the parameters to be checked in the MIMIC during inspection?

1732




volts=230 c=10mf a=??

1563

before transformer oil dielectric strenght tests are taken the oil should be allowed to settle to remove option 1 air bubbles 2 gasses 3 contamination 4 water

1169

I am about to write exam in RRB bangalore for the post of section engineer.please provide me with previous exam questions

1659

CAN U PLEASE TELL ME SOME G.D TOPICS FOR APGENCO INTERVIEW&G.D

1925

Why does the Solid state Rectifiers for 3-ph brake motors sometimes have 2 & sometimes 3 output terminals?

1591

what mean by analog ,digital,numerical meters and relays? say the example?

1745

Why the output of OP-AMP is always less than Vcc?

1457

How does an oscillator differ from an amplifier?

651

Why do we avoid electrical conduits in floors at apartments?

1614

What is signal flow graph?

639

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