Electrical Engineering Interview Questions
Questions Answers Views Company eMail

1.what to do if ferquency of any power system continue to decrease ?

NTPC,

5 8470

At what distance power transformer can be placed from generating ?

NTPC,

6 8388

What would be the ratio of a Delta-Wye tranformer having 48000 volts phase to phase on the primary and 4160 volts phase to phase on the secondary?

5 5909

why neutral is neccessary?

7 11523

what is the difference between neutral

10 10514

how and where megger works?

Power Grid,

9 33283

how induction generator works?

3 5320

Where I can get the sample question for post of Junior engineer electrical-II For RRB Bhubaneswar.

Noida Power,

1682

I have applied the post Junior Engineer-iii(c&w)in R.R.B chennaI recently . can i get any model question paper LAST 4 YEARS?

Data Entry Operator, RRB, SSC,

2 7844

Why different types of connection in transformers are used? (star/star,star/delta,delta/star,delta/delta)Why we are only taking in consideration of star/delta type transformers? if only star/delta is good in practice where doses other type of transformers are used? Note: i want to know place of using different types of transformers other than Star/delta type with brief description.

Electrical Tech,

1 7095

why a vaccum is created in condenser

Honda,

13 67289

how to check the 3ph capacitor is good or not.

MacLellan, Yash Technologies,

14 54798

how can we represne the analog signal and digital signal if want to measure the speed and we have to use PLC

2 4090

how would you come to know if a transformer is double wound or auto? note that there is no tag. you are given only a multimeter.

5 15976

How i can identify the 220V and 110V power supply equipment? No tag number.

4 6496


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Un-Answered Questions { Electrical Engineering }

what is the use of commutator in dc motor if we supply ac ? commutator is used to convert ac to dc.and it is used to arrange the flux in unidirectional in case of dc supply. if we give ac as supply to dc motor what is the use of commutator?

1635


Scott connection is used for A 3-phase to 2-phase conversion B to achieve higher effciency C to save copper D to reduce harmonics

1859


if a 3phase 100kva distribution transformer , 400 v,50 hz, 4-wire system is loaded at 160 k.w mostly 1-phase Lighting & Airconditioning split a.c load what will be the net effect on the power system in terms of voltage, powerfactor, current , efficiency of xformer

1455


What is error of a measurement?

612


Difference between Earthing Truck & Earthing trolly for HT panel

3794






What would cause a 240v choke that should give 110v out on a 16w lamp to gradually increase to 160v?

1740


1. what is usage for power factor in industries?? 2.why we need to monitor power factor??

6677


State and define norton’s theorem?

768


hi friend i am going too attend for hpcl in this month please help me by sending written test question papers i am in the stream of E.E.E

1523


what is residuel magnetism. and how order lead acid batteries for 24 volt. emergency lighting system.

1560


I am inpecting a 10kVA UPS what tests should i do and should i observe?

1791


What is cross over distortion? How it can be eliminated?

763


hi every body i am master student in control engineering and my project is slip control in trains i assumed a Dc motore as traction motor but i don't have characteristics of this kind of motor that is used in train. i want from every body if he or she has the characteristics or information about Dc motor that is used in train give me those information or technical characteristics .

1050


what are the ''pitting rings''and how cn they be controlled in a series generator

1363


salam,hi, i need to know what the spesification of 300amp msb...

1583