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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

What products have you designed which have entered high volume production?

Intel,

1015

What was your role in the silicon evaluation/product ramp? What tools did you use?

Intel,

1122

If not into production, how far did you follow the design and why did not you see it into production?

Bharti, Havells, Intel,

1159

what is the reason of power development in synchronous generator due to saliency ?

1 5713

How is a 100 MVA transformer cooled?

9 18109

What are the main Electrical IS rules?

3 7490

when we increase load , current drawn from source also increases why ?

5 17761

what is the difference between earth and neutral?

Bhel, Emerson, HCL, JLL, L&T, Siemens, TVS,

56 128038

What is thyristor?

13 19894

What are the technical reasons for soaking transformers for various times before allowing them to pick load after a fault ?

GE,

4 37727

what is the instataneous value of voltage in a 3-phase balanced star connected circuit?

6 8606

At which conditions a synchronous motor acts as a synchronous condenser?

KSEB,

9 21164

What is the power ratio between power in Star and Delta circuit?

ST Micro,

11 36365

For an 100kw generator, only 50kw of load is connected. will the generator generate only 50kw or 100kw. if it generate 100kw what happens to rest of the 50kw. what happens if we connect more than 100kw of load?

8 15594

In a synchronous motor armature current flows due to revolving flux which in turn rotates the load,but in no load condition armature current is zero hence thr is no revolving flux then how motor rotates?

9 10622


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Un-Answered Questions { Electrical Engineering }

What are the no-load losses for the 11000/415V transformer with the following rated capacity? 1.1500 kVA 2. 2000 kVA 3. 2500 kVA 4. 3000 kVA

525


what would happen if reactive power (kvar)is increased (more)or decreased (less)? how much exact reactive power should be maintained? and what should be done for that

1279


how to determine the inrush current of a transformer

1628


What is the direction of current flow in ct secondary...means if the current is flowing from P1 to P2 then what will be the direction of current flow in ct secondaryw

928


how to select diiferent power transformers of same capacity on no load loss and full load loss by economical point of view.?

1072






following are the questions asked in interviews: 1) Considering the short circuit fault, which switchgear is preferable, SFU OR MCCB? Which operates faster? whicg one is popular in Indian Market and why? 2)Define SCPD. What is type2 coodination? 3)Why the contactor rating is higher for the fuseless selection than for fuse selection? whether the ratinf of SFU or MCCB remains the same in both the cases? 4)If the HP rating is known then can you calculate the ratings of L.V Switchgear(SFU/MCCB, contactor, OLR) without using the selection chart?

1225


Hi, My plant daily consumption is calculated as 3.8MWH but my supplier has sanctioned an power of 2.6MW per day. how can i equal or distinguish this two factors

958


WHAT IS MEANT BY TV TERMINAL IN 500MVA TRANSFORMER?

1189


What is different type of Electrical curve and how it protects the equipment's while up-normal situation?

920


I AM GOING TO ATTEND APTRANSCO ON 26TH OCT 08.PLEASE SEND ME ANY MATERIAL OR TYPE OF QUESTIONS OR EXP QUESTIONS.

1065


What is rotary phase converter?

147


What is the reason of polyphase induction motor tripping suddenly on high current during running at 70% laod? Motor IR , winding resistance & inductance balance. Motor no load current is balance and ok as per mgfr. data.

1438


If we have use two power cable for incomer, that time how many use cbct for earth leakage protection? 1 or 2 if 1 way? If 2 way?

1153


what is inter connected dc generator?

1724


control & auxilary circuits used for circuir breakers

1020