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

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

why is the core of the underground cable is spiral in shape instead of straight?

Mecon,

8 10333

what s the differenc between electrical &electronis , how to define them

9 11262

how to define tell me about self

Bhel,

2005

Can anybody explain Why starters are not used for motor starting in industries?

9 11431

WHICH IS BETTER( FOR POWER SAVING)- ON LINE OR OFF LINE UPS ?

Punjab National Bank,

3 9076

If connected load of Asphalt plant is 375Kw. What suitable KVA DG set is required. What is calculation formula. what extra load have to consider. in what efficiency it will work.

MAHINDRA,

8 17908

what is the suitable voltage of transmission line to transmit 10000w power through 250 km. (a)11kv (b)33kv (c)66kv (d)132kv ]and please tell me whats the logic behind it

ONGC,

7 21326

tell 2 reasons for why only copper is used in domestic wires& only alluminium in transmission lines ?

ABB,

10 17812

what is reactive power ? what its role in transmission lines?

Thermax,

3 12756

Why we are mostly using a single 3-phase transformer instead of three 1-phase transformers?

7 12521

what is the diff. b/w restricted earth fault relay & standby earthfault relay and where they are used?

KSK Energy, Reliance,

4 72395

WHY WE ARE EXPRESSING KW-HR AS UNIT OF ELECTRICITY.........?WE CAN EXPRESS IN ANOTHER UNIT.....?

Summit Power,

4 8201

why current increases when voltage decreases in ac system

10 28360

How does a star connection and delta connection work? How does the star connection save starting current and how does it change to delta?

3 12533

how much loading in terms of ampere can put on 5 MVA,33/11 KV TRANSFORMER having rated current 263 Amp ?????????

ABB,

11 37319

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Un-Answered Questions { Electrical Engineering }

What is given by the definition in BIL IMP/PF = 950/395 kV. This was found in a name plate of a power transformer.

2364

How does a tertiary winding filter harmonic(espcially 3rd one) from entering into load system?

1811

How the annunciator works ? How to do its wiring

2302

why various test are performed on electrical panels & power cables before commissioning on site & what are these test???

2006

Why choke coil is connected in series with starter in tubelight??why starter is connected in parallel to tubelight??

3384

Why human body feel electric shock?

1081

HOW TO WRITE A QUENTION ANSWER? I MEAN SHORT OR LENGHTHY ? OR FROM THE BOOK AS BOOK..... SOME TIME WE GIVE A ANS FROM THE BOOK AS LIKE BOOK ND WE GET MINIMUM 60% MARKS OR MORE THEN....... THEN HOW TO FILL THE Q-PAPER?

2061

can we synchronize star system generators with delta system transmission line ? and how ?

2846

what does mean of RCT and STR in diffrential CT?

4238

how can i get the formula to find out the cable size if i know the load of main fuse protection.

1941

What are m circles?

1117

What are the advantage of free wheeling diode in a full wave rectifier?

1133

How do you compute voltage drop and cable size over distance?

2276

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

2042

why we use four type of phase angle difference between pimary & secondry winding of a transformer & where we use them?

2105

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