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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

working principles of cf lamp,incandescentlamp and f lamp?

1399

How each of the following losses occur in d.c machines (i) copper (2)core (3) windage (4)friction please help me

1210

Why does an induction generator is preffered as compared to synchronous generator in especially a wind energy power production project?

1146

One 15kw motor Why we used star delta feeder?why not used DOL please explain in details

BMM Ispat, GSK, Pitti Laminations,

3 5676

WHAT IS THE FAULT WHEN 100HP TURBINE MOTOR TRIPS, LIST THE FAULTS AND ITS TRABULESHOOTING TIPS.. MY AUTO TARNSFORMER STARTER TRIPS

MPS Techologies,

1168

What is ferrite affects and what is disadvantage of ferrite affects.

1 2012

what is the meaning of Ring Mean Unit in a substation or trasformer also tell me its oerpuse?

NPTC, NTPC,

4 41950

How can make a star delta with Rstar delta feeder ( ( 4contactor & one timer ) pls answer with digram (power &control digram)

1 2483

write circuit diagram for a motor rotate in forward direction once it started and when pressed the same button it should rotate in anticlockwise.

1669

What is the output of 25 kva 11/.4 kv transformer in kw ? Plz generalized it...

NTPC,

3 6407

I WANT HOW CALCULATE TO CABLE FOR WELDING PLANT ?

1009

what is mathed of check the D.C MOTOR 181 KW (ARMATURE AND FIELD) WHAT IS THE MATHED OF CHECK THE THYRISTOR MODULE (HIGH CURRENT)

1098

Can we transmit digital signal to long distance ?

1084

can u give me a brief idea about power line carrier communication ??

979

can u give me a brief idea about power line carrier communication ??

1076


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Un-Answered Questions { Electrical Engineering }

What is the current carrying capacity of 35sq.mm flexible cable?

624


What is star-delta transformer?

228


what is the minimum requirement gigaohms for the insulation test using 5kv in 300mm xlpe cable

1081


what is meant by impulse voltage?

1127


what is the importance of earthing system on the generators big capacity and small?

932






can we use NPT glands in LT panel

896


in HT service 3ph 4 wire service Y-phase voltage shows zero . whether it is meter fault? or what be the reason ? if y-ph voltage zero ,can current is recorded? reasons for failure?

902


what is meant by re-rolling motor? how it differs from standard motor?

1062


Importance of fault current in power transformers and how to monitor the same? How is it different from winding temperature?

917


what is the difference between RMS & TRUE RMS VOLTAGE

1970


why is the power generator connected as star earthed or star earthed through reactance and what its features ?

758


what is the voltages using in movie theaters??? why ??why not other??

1363


If we have to feed a housing complex having load 8MVA, than what would be the better option, either we first step down 33kv supply into 11kv & than 430v or we proposed no of 33/.44 kv transformer, also which option is economical?

1291


Sir, I have applied for the of Assistant.engineer of NPDCL. please send me all AP TRANSCO AND JENCO solved papers of previous exams . I requested send me the papers to my id as soon as possible (rajanikanth_peddi@yahoo.co.in) (This is very urgent) Thank You,

1999


what about GD square and its important for motor design?

2808