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

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

what will happen when square wave is fed into input side of 3kva transformer and what you will get on output side.

Blue Star,

3 6790

Whether earthmat designning is done only for sub station or it can be done for multy residential complexes also? What is the size, type & arrangement of the earth grid to be done?

1 3213

Help need in transformer !? Hello Friends The parameters of 2300/230 v 50hz t/f is R1=0.286 ohm R`2=0.319 ohm Rc=240 ohm X1=0.73 ohm X`2=0.73 ohm Xm=49.2 ohm Secondary Load impedance ZL=0.387+J0.29 solve the exact equivalent circuit with normal voltage across primery.. I know every thing but i cant find CURRENT I1=? and I`2=? Please help me give solution or only Formula please please...

3063

Why the outpet og DG is 415V not 440V?

1 6204

What is the meaning of EDO in DG panels?

Bajaj,

3 7631

what is the use of interposed & reverse voltage transformer

Anjani Steels,

2 15656

Why we are not placing c.B 's btwn generator and transformer.? what happens when generator gets disconnected from transformer when it is running @ full load?

Areva,

3 6416

Instead of single phase(220), if apply Phase to phase supply (eg: for lighting fixture). what will be the power formula? what will be the volt and current value? please explain me with some example.

1 3002

what is phantom load, Give any example

2 5253

what is the impedance voltage of transformer?

AVI Enterprises, MacLellan,

1 3985

11kv alternator commissioning test?

2 14608

What is an alternator impedance value?

Orchid,

2812

Diff between power trans and generating transformer?

1 3892

What are the tests to be conducted in the electrical installations

1 3916

pls send me some of the solved question booklet of Junior Engineer -2 (ELE) in RRB

RRB,

1 4322

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Un-Answered Questions { Electrical Engineering }

We have 5 Distribution sections with variable loads&We have 3 Gensets(500kva,380kva&250kva) our total load is between 400kva to 600kva. so how could we connect 3gensets.

1816

Minimum IR value of 1.1 kv grade 3.5c (300, 240,185,150,120,95,70,50,35,25) sqmm Aluminium XLPE cable and 4c (16, 10,6 & 4) sqmm cu arm cable between RY,YB,BR,RN,YN,BN,RE,YE,BE & NE.

3314

What is the HVDC Transmission System? What are the conditions applicable to lay an HVDC Line?

2250

how freewheeling diode improves the powerfactor

5372

Why we use mho Relay in long transmission line?

1413

how to get bearing & winding temperature of an induction motor?

1975

How equivalent impedance is calculated in thevenin theorem?

1091

what is the relation between knowing of the distance between power transformer and the capacitor feeder in case of parallel operation

1937

What does quality factor depend on in resonance?

1042

For a spring controlled governer the relation F = ar+b (F is the controlling force, r is the radius of rotation a and b are constants), indicates that the governer is

1182

How to decide the size of the capacitor for a single phase induction motor say 2 HP ??

2166

1600 KVA ka transformer hi aghar lt side par 800A aur voltage 420 ho to HT side ki cable ki rating keya ho gi?

1988

What are the Formula of computing Back up Time of 500kVA UPS with 4 Battery Banks, each bank composed of 43 pcs of Batteries 12V150Ah. How to compute the Back up Time of UPS? We have also 3X500kVA UPS running in Parallel same composition as I write above.

1301

When calculating the speed of a rotor required for a particular frequency of synchronous generator we use the equation 60f/p Is this p is the number of pole pairs of rotor & do we consider the number of pole pairs in the stator is 1?

1945

i m doing DEEE in part time,can i join regular cources in BE,,IF i join what the cources can i select like (civil,ece,IT) ,,kindly advice

2072

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