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 3401

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

Indian Railways,

2443

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 4371

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 4926

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

ABB,

7 35401

why does in transformer the v/f ratio constant?

TATA,

2 10742

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

1 2818

What is the basic principle of welding process?

2101

WHAT IS THE MEANING CREEPAGE DISTANCE

1 4133

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 3557

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

3 16783

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

2070

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

1 3486

how to calculate the earth fault current

2472

whats relation b/w motor current & friqency

1 3655

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Un-Answered Questions { Electrical Engineering }

what is feed back and what are feed back amplifiers?

1039

what a function diesel generetaor turbo charger & turbo charger is more heated explain reason ?

2218

Do inductive loads have distorted current waveforms ?

1879

Starting current of a 10 HP induction Motor is ______ time’s full load current.

2881

WHAT CAUSED THRESHOLD VOLTAGE TO EXIST?

4014

12.5 tons a/c is their how much kva generator can recommend to the customer.

1982

What are the uses of lead compensator?

1130

what is photo voltic cell,& what are the materials associated with that?and any spcifications like volts/cm etc?

1976

what is KSR type transmission tower? What is LSR type transmission tower?

5345

can any one suggest me the tilt angle of my solar pannel ?? or tell me how can i know the fix tilt angle of my solar pannel?? my cordinates are 31.503629,72.993164.

1765

What is the maximum No. of out going mccbs permitted from an LV distribution paqnel? What is the ampere relation between incomer and out going switch gears/mccbs?

2024

how unidirectional torque is produced in DC motor?

6756

I am doing apprenticeship training at HT switch yard in NLC. How can i get electrical c license. ??? What r the rules for getting it as an apprentice? ??

1806

sir please send me techinical questions for junior engineer posting in bangalore railway i am diploma holder

2062

why ct ,cvt should be stored in a vertical position?

2603

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