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

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

haw to calculate resistance of induction motar

1 3647

in an ac series circuit there are 30 bulbs are connected in a serial set.what will happen if one bulb is fused and we removed the bulb and reconnect with the remaining bulbs? (29 bulbs). will the brightness of other bulbs increase or not?

3 7968

how induction motor work as a generator?

2 4355

5MVA TRANSFORMER SUDDENLY FAIL WITH THE PRV TRIPPING AND LARGE AMOUNT OF OIL SPREAD OUT? SO IT CAME BACK WITH THE REPAIRING WITH REASON THAT IT FAILS BCOZ OF TRANSIENT EFFECT? SO PLZ EXPLAIN HOW DOES IT HAPPENED?

1 4223

why neutral busbar size is half of the phase busbar size in control panels

IBS,

1 12686

why resistive load has unity power factor,inductive load lagging and capacitive load leading power factor?

OEG,

3 7181

what is dol starter

1 3999

which is the gas used in tube light?

12 17967

Which motor runs on both ac and ac? a) dc series motor b) reluctance motor

2 5473

Why cables and busbar both needed in LT Panels?

2137

How to do fabrication , busbar and wiring cost for : 1. LT Panels 2. C& R Panel

1871

how do we know the LT or HT panel trip by some broblem which indication willshow

TATA,

2 5131

what is the difference between arc and spark

2 5102

how to decide the panel size like MDB ,SMDB PANEL SIZES

7298

Dear All kindly let me know that I know about the DG Rating for Example 150 KVA,Now how i will know that how much Ampher load it can offoard.

2 4625

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Un-Answered Questions { Electrical Engineering }

What are the types of transformers according to the arrangement of iron cores?

1080

typically in power distribution substation. 1- Any idea how would be the graph of capacitor bank consumption verses time through the day . 2- How is the switching ( on and off ) of the capacitor bank, per need?

1679

What is slope...? Explain slope 1 and slope 2...?

1555

How much earthing frequency is capable?

1920

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?

1872

What are the common sources of energy?

1044

Hi Suppose we have a wye/wye transformer which is grounded at both sides,in this situation, do we have ay ground transformer? in other words, ground transformer can do any thing more (while we have nuetral wire in both sides)? As the last question, what about 3rd harmonic? we have two choices: first using wye/delta transformer + ground transformer and second using wye/wye earthed connection.in the former choice, we dont have 3rd harmoonic at the secondary side but what about Yn/yn conection? do we suffer from 3rd harmonic in the Yn/yn connection?

1921

How to Decide(calculate) Bush bar size for copper and aluminiam ?

2079

i m in need of current rating chart of heavy duty pvc/xlpe, cu/al cables. can somebody provide me? if yes, plz send me at ashish_patel111@yahoo.com

1974

What is the voltage gain or transfer function of amplifier?

1094

what is the working principle of energy saver control panel. please give the complete calculation & theory.

2374

what is the reactive power what is the use of it in system

2115

in an electronic tri vector meter when the current and voltage sequence changes ? what is the effect of phase sequence on recording of meter

2171

Which type of questions well asked. ?

1652

what is the difference between switch yard to residential area.and how much required it.

1720

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