Electrical Engineering Interview Questions
Questions Answers Views Company eMail

WHAT IS THE SETTING OF OVERLOAD RELAY AND UNDER VOLTAGE RELAY IN PERCENTAGE?

2 5673

what is the setting of locked rotor in HT motor ? (answer expecting in percentage)

1772

How we connect capacitors in Fixed Series compensation of AC transmission lines. Whether in parallel or in series?

3 5045

How do we calculate tranmission line losses of a 132 KV tranmsission line. Please give some quick tips?

2 5784

in a silicon diode we can measure .7v in a voltmeter.but why we can't use this voltage for using?

1440

We have 2 no. 4MW DG set. and GEB supply. But, we running, only 1 DG set. when we done APFC/Power factor setting : 0.90, then winding temp. Low. but when setting done : 0.83, then Winding temp. increase. WHY Why ? ? ?, plz give me answer.

4 5382

how can calculate static 3phase 4wire CT & PT operated energy meter constant when calibrating using refference meter suppose we have 11kv/110v PT and 30/5A CT, the meter constant is 160imp/kwh, where meter is showing MW energy? give me solution which constant i feed in my refference meter for calibration of energy meter?

3 20535

what are the different functions of mccb, rccb / elccb ?

2 7599

what is vch ?

CTS,

1 3056

What is load boxes ?

AMIE, PEPL,

1568

Please provide me detail cable voltage drop calculation

1 4150

how to calculation increase power factor for single phase

1799

how to calculation increase capacitor,increase power factor for three phase.

1614

What is basic fundamental for choosing NGR or NGT for any generator neutral grounding

EDF,

5 35378

Can we connect more than one NGR at a time of different rating of generators. what is advantage or disadvantage.

2 4836


Post New Electrical Engineering Questions

Un-Answered Questions { Electrical Engineering }

It is desired to flood light the front of a building 42 meters wide and 16 meters hig.Projectors of 30 degree beam spread and 1000 watt lamps giving 20 lumen/watt are availabl.If the desired level of illumination is 75 lumen/m and show a suitable scheme.Assume the cofficient of utilization, deprecitation factor and waste light factor are 0.4, 13 and 1.2 respectively.

2868


HOW WE CAN REDUCE THE CIRCUIT COMPLEX OF STAR-DELTA STARTER .BECAUSE NOW WE USING ONE TIMER RELAY & THREE CONTACTOR FOR MAIN,STAR & DELTA ?IF ANY IDEAS PLZ POST.THANK U

1972


what is mean by ideal infinite bus? why it is required to consider in fault short circuit calculations?

2213


7- What is the Dissipation Factor and the difference between it and Insulation Resistance Test? 8- What is the task (function) of DC and AC reactors in power plant? 9- What is the task (function) of (open delta with earthed) in some types in transformers? 10- What is the base of the selection of the vector group in transformers? 11- What is the zig-zag transformer and its function by drawing in large detail? 12- What is the polarity ? 13- Why we make short between phase(R) in high side and phase (r) in low side in vector group test? Where High Side ( R ,S and T ) and Low Side ( r ,s and t ). 14- What are the time on delay and time off delay? 15- What is the vector group? 15- What is the task (function) of different types of vector group such as Dyn11 , Dd0 , YNd1,……..,?

1747


what are the breakdown voltage rating of mini- curcuit'transfarmer!

1643






What Is Connection APFC Panel In Compony.

908


why output is out of phase in case of common emitter?

1632


What is minimum permicible value of leackage current for LT Panle when applying voltage up to 3 KV for 5 Minuits?

1676


What is the basic rule for block diagram reduction technique?

726


If o/p power is doubled by how much does the sound increase

619


Apparent power is expressed as V * I(Conjugate). Why not in V * I ?

3422


What is the Minimum winding resistance of motors ( small & big)? referance range

1816


what is the difference between circular wdg & ractangular wdg?

1532


Efficient electrical earthing in hard rock area

1023


What is George phenomena to start the synchronus machine?

3628