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

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

In what condition the HT fuse breakes?

2078

What is mean by retrofitting of machine tool please brief.

1 3587

What is the difference between Busbar Chambar, MCCB board and MCB Board? How to choose to use which one in the system?

2 10336

1)What will be full load current for 1000kva 3 phase generator. 2)What will be full load current for 20Kva 1 phase inverter.

5 10024

Why P.F(power factor)relay should not be connected to the D.G(diesel generator) incomer side

ABB, Corsa,

1 4237

Why are short circuit ratings always 16kA,25kA,36kA and 50kA.Who has fixed these?

4337

What is the maximum percentage voltage drop (vd%)for a motor control center

2057

what is the function of impulse relay

2571

why connecting surge unit in contactor coil

1929

can you please send me the technical questions and aptitude questions of honeywell and jindal steel electrical engg. question paper my e-mail ID is(kkesavanraj@gmail.com)

2044

1. Why is the speed of shunt motor practically constant? 2. Why dc series motor use to start with heavy loads? 3. advantages & disadvantages of separately excited generator over self excited generator?

2594

In EB metering we face problem kva jump even in no load condition.can any one help to control this

1883

how to calculate bus-bar sizes? (copper bus-bars)

2 17934

What is GNR ? How much value of ground neutral resistance?

9 15057

Why transformer neutral earthing? What is advantages?

3 6966

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Un-Answered Questions { Electrical Engineering }

How to calculate energy stored in a capacitance

1221

How to operate a ac chilar plant?

2549

what is the purpose of slope in the differential relay?why we are using two slope?but in busbar differential we are using only one slope.why?

2957

difference between power surge and switching transient

2150

What kinds of decision are made about CT from it's Knee point(voltage & current)?

5192

why we cannot protect 100% winding of an alternator by using differential protection?

2300

Draw a 230kv two-bus bar system showing the following. 1.Two generators (150MW) each connected through one 15.75/230KV transformers 2. 1 outgoing lines 3. Two 230/130 KV transformers 4. BUS PT's 5. CT

2630

why do we measure VIBRATION in -24vdc and why we adjust gap voltage -9vdc to 10-vdc? i am trying to get this information since 5 years, yet i haven't get reliable answer, i hope i can get from you.

1892

how can we understand that where we have to use ac or dc coil for solenoid valve and why?what is the different between coil of ac and dc explain please.

2024

what is through fault?

2364

Refernce currents are to be generated using refernce cueernts how can this be done

2316

What is deference between MCB & MCCB & ISOLATOR

2173

What is the formula for calculating no-load current?

1144

I don't understand why when we connect high voltage source in DC to electronic motor , we must add capacitor and resistor in parallel ? (I know that we use capacitor because we want to absorb the current that in the first second electronic motor in opposed with current course produce. ) what are the feature of Resistor and in such situation ?

1909

Earth has zero potential then what would be the neutral potential ?

1469

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