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 the carbon brushes are used heat created rotating parts in eiectricity

1 3475

What is the technical difference between IS:1554 and Indian Railway IRS:S63/2007

Indian Railways,

2488

This is about the recent problem that we have faced in our project site. We have 6/7.5 MVA. 66/11kV three phase star - star power transformer. The neutral was solidly connected to the earthing mat. But because of high resistance of earthing mat (130 ohm on LV and 180 ohm on HV), one day LV side neutral earthing conductor melted and we had a huge damage. Can any one plz tell me what might happen when we connect power transformer neutral to the earthing mat which has high resistance (>100 ohm ) ?????

2 4457

why we are connecting the alternator to a steam turbine of higher RPM then the rated RPM of alternator? For example:( connecting 1500 rpm alternator to 7600 rpm steam turbine). we can directly connect the same rpm turbine to alternator know??? is there any special reason ???

2 5026

what is the meaning write of AC1,AC2,AC3 .....power contactor

ABB,

7 35684

why does in transformer the v/f ratio constant?

TATA,

2 10852

Why are we not getting shock while touching a metal which is being welded?

1 2917

What is the basic principle of welding process?

2146

WHAT IS THE MEANING CREEPAGE DISTANCE

1 4201

why the vfd motor take current high in vfd panel then mcc panel.current in vfd panel=160A in 93%.and mcc panel it shows 130A. (132kw motor)

1 3635

how to calculate the earthing conductor & no. of earth pits required

3 16937

how to calculate the lightning arrester conductor @ no of earth pits required

2122

what is relation between motor poles & motor current in 3 phase motor

1 3571

how to calculate the earth fault current

2503

whats relation b/w motor current & friqency

1 3709

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Un-Answered Questions { Electrical Engineering }

how to meas-our losses for L.T & H.T

2168

How to calculate the sag on transmission Lines.

3013

what is the solution for meger test failed the MV cable?

4267

Why colled 440V to 3-phase supply.

2147

What happened ,If 3 phase clearance not maintained in 33KV Line,11KV LIne etc?

2363

why use phase displacement in transformer.and effect of phase displacement on transformer

2872

how to i get B licence,i am completed BE electircal and electronics engineering.i want to konw the proceduure to get b licence

1743

If 22 KV HT line, Current transformer is 25/5 then how to calculate multiplying factor.

1092

What is Instantaneous Earth fault relay,how will work

2232

State The Difference Between Generator And Alternator?

1276

what are inherent currents?

2023

ACB & VCB how do work and saftes and how can maintenance in this and parts name show with picture

2105

If the earth is a good conductor of electricity, why don't people get shocked every time they walking on earth?

1813

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

2300

what happened when we supply a dc current in dc motor?? can it worked properly?

1954

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