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Electrical Engineering Interview Questions

what is VFD and how to save the power by using VFD?

6672

5606

its Kva and Kv are same?

4330

If one d.g. is unable to take full load of system, then second d.g. will take care of partly Load.for this condition RPM of both DG set should be equal.By using Synchronization panel RPM of dg sets are match, is it true?

2646

1500Ah VRLA battery,if its weight is designed 125kg during maufacturing its weight is reduced to 85kgs,What will be impact on AH capacity,life & economy?

1343

why in motors dc extitaedtion is prefer

1167

The capacity of the transformer is 20/25 MVA, Ratio is 132/11 KV, Vactor group YNyno. and impedance is 10.07%. As per the calculation the secondary current is 1312.2Amps. The maximum fault current the transformer should sustain is 13.030KA. How many times the transformer should sustain the maximum short circuit current of 13.030KA over a period up 1 Year. The transformer is repaired one & 10 Years old.

6120

How to derive detailed design of Suitable bus Bar for 100A for 6.6KV?

1114

Why in Digital Megger for finding Insulation resistance,-ve is applied to core or conductor and +ve is applied to ground.

ACC,

2477

During Millivolt drop test current leads are applied in the extreme ends and voltage leads are given just before the current leads.. what will be the difference if voltage leads are given in the extreme ends? and why?

5308

why we use MV panels??? what's r all the needs

15545

What is the difference between generator and turbo generator - related to power gereration

4263

2559

The power factor of the fixed load is 0.8, now the p.f is varying from 0.8 to 0.5.

1172

what will happen while giving 2 phase supply to 3 phase motor

4377

Un-Answered Questions { Electrical Engineering }

what is transistors comprised of?

259

Define active filter?

229

What is the effect of pi controller on the system performance?

213

What are linear and non-linear systems?

230

Dry type transformers

990

what is the difference between c power and U power acb breaker

2743

I Have 3 Phase 10 KW AC Alternator i found one phase weak, so what will be the reason & what action shouls i take to rectify the same.

1157

What is difference between YNyn0 and YNyn ??

1281

How does an oscillator differ from an amplifier?

264

Can anyone tell me some hints about what type of questions are asked by the interviewer by an Electronics engineer when company is installing an IPP and wants a team of engineers?

1397

What is CVT and what is relation with wave trap?

1235

I have 440v power coming to facility,( not being used ) can I buy large generator, (gas) to sell power back to electrical co.

1582

What is meant by control system?

231

Why do power lines not short out when they fall into water?

1096

Why do not we prefer non conventional sources of energy to conventional sources?

258