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

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

When a square wave is applied to primary of a transformer then what will be output wave form of secondary ?

2041

WHY DOES NEUTRAL DO NOT CARRY EVEN THOUGH IT CARRIES RETURN CURRENT?

1 6065

why AC signals are represented by sinusoidal waveform?WHY other waveforms not used for representation

1934

explain the working principal of the circuit breaker?

5 10989

What do you mean by pf of a generator? Power factor purely depends on the load (wether inductive, reactive or unity) then what does the pf mentioned on the generator nameplate means?

3 10163

what is the difference between diode and zener diode?

4 8098

How can CALCULAT the current carrying capacity of aluminum and cOpper cables respective of that Sq.mm ? with formulas ?

Bajaj, Eagle, Godawari Power and Ispat, Havells, L&T, Mascot, Polycab, SGML, Sterling Wilson,

12 193650

how we can calcultae the short circuit level for bus bar

Jaiprakash, Panorama Apparels,

2194

what is the difference between indoor package substation and outdoor

3 13265

what is package substation.how many types they have

ABC,

2063

why we use only sine wave in ac why we do not use other wave forms

BARC, NTPC,

21 50392

name the famous power plants in ap and vwhere it is located with capacity details

BARC,

1 5121

why the capacitors works on ac only

5 18852

how do u get less voltage in star connection

BARC,

4 9208

what happens if i connect acapacitor to a generator load

5 14736

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Un-Answered Questions { Electrical Engineering }

In cable sizing calculation (determining the max route length of cable) why we choose the shortest length between cable length of full load current Iflc & starting current Istart?

3267

What is the drawback of class b amplifier? How is this minimized?

1091

in science exhibition how lamp can blink when you clap near the lamp ? thank you

1926

Pleae send me last 5 years of Question book about RRB chennai.

2246

how does directional relay work incase of ac ?

1469

how to calculate the fault in substation

2362

WHAT IS THE SIGNIFICANCE OF VECTOR GROUPS IN TRANSFORMER? WHAT WILL BE EFFECT WHEN PHASE DISPLACEMENT CHANGES IN TRANSFORMER?WHAT IS THE NEED TO BE PHASE SHIFT CHANGE BETWEEN THE PRIMARY AND SECONDARY WINDING

1752

how to select energy meter? have any calculation?

2943

What is meant by positive and negative feedback?

1012

What are the main significances of root locus?

1187

how to differentiate a mpcb,mcb with a contactor? Explain their working operation

2149

we have two generators different capacity on 15 MW and other 6MW at 11 KV , 15 MW gen. bus short level current 40KA,and 6MW short level current 25KA,, length of cable 100MTR between 6 MW from 15MW gen. for bus coupling . kindly tell any one can we use both NGR OR one NGR from any GEN. BOTH NGR has diff. rating. Tariq pakistan

1626

Why only sinusoidal ac voltages are generated?why not triangular or sawtooth?

2044

1) What are your personal strength? 2) What are your personal areas of improvement? 3) What are your expectations from from a particular job? 4) what are your carrier objectives?

2477

whats the existence of reactive power and when it arises?

2096

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