Electrical Engineering Interview Questions
Questions Answers Views Company eMail

ALL HT /LT PANEL TEST? DISCRIPTION.

Essar,

25637

DIFFERNCE BETWEEN DCS AND PLC? HOW IT WORKS?

Essar,

1406

How much duration I can keep open the CT if it is under loading condition(100 Amp load)?

Infosys, NTPC, Suzlon,

3 5543

How to reduce the static electricity producing in solvent room? By P.D.Patil BioCon

Biocon,

1571

During a temperature rise test of a bus duct, it is fed with 415 volts at 2000 amperes. Why dont we get an electric shock if we touch the bus bars?

ABB, SDBL,

7 12535

how to calculate circuit breaker capacity

Siemens,

6 72783

what is the difference betweem star connected motor & delta connected motor?

13 90278

what is the CT of protection and CT of metering ? what is class 5P10 & 5P20 and class PS ?

JEE Main, ONGC, VRA,

16 125103

it is in our knowledge tht right plug of supply of residential suppy system is phase n other is neutral...howevr the battery charger of mobile works in both ways...i mean it is not restricted in only one direction.ny of the holder of charger can hav phase .so y is it not lik tht phase of supply must b connected 2 phase of charger...?

TATA,

1547

can v rotate single phase induction motor in both the direction...?

1 3973

How should i design a 1ph & 3 ph transformer. Kindly let meknow all steps and formulaes related to design from scratch.

1608

How should i design a 1ph & 3 ph transformer. Kindly let meknow all steps and formulaes related to design from scratch.

1510

how can i select the cable ratings

4 5336

i want to model paper for section engg.

Infosys, RRB,

1556

what is the diffrance between earthing and grounding...?

Essar,

6 9076


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Un-Answered Questions { Electrical Engineering }

How to megger test 11 kV cable and the acceptance IR value

2435


What is the function of probe in cro?

635


What is meant by reactance voltage?

614


why do we need to use 3c+3e cable, normally i select only 3c+e cable and i think it is enough. pls explain the usefull of 3e cable ( in this project the earthing system is well done)

1996


i have applied for junior engineer 2 c&w for Guwahati RRB please send me last five year question paper

1583






what are the reasons of CT circuit faulty in busbar protection scheme?

949


WHAT IS THE DIFFERENCE BETWEEN GENERAL INVERTER AND SOLOR INVERTER TELL ME PLZ

1652


Give some differences between open loop and closed loop?

627


how we calculate torque ? how we improve it ?where torque will either motor or generator ?

1564


would you please give me any idea about the BARC interview question on electrical? i have an interview on 1st july.....plz hlp me.......its urgent......

2015


what is load despatching

1654


how to select the double earth conductor if 21A full load?

1549


I am designing new project sub station with 220 kV / 11 kV, 40 MVA capacity. This project have many recifier sets, which can generate 3rd harmonics. Now I have to select vector group of This transformer. To minimise 3rd harmonics, what care should I take in selection of Transformer Vecrtor group? If it is Y-Y with open Delta tertiary then what should be the rating & voltage of Tertiary Winding?

1438


please give me all the Alarm .Trip ,Safety Relays & Conditions of Chiller mail me on ashokbabunhce@gmail.com

1350


A 100 kVA , 400 v/250 kv testing transformer has 8% leakage reactance and resistance on 100 KVA base . A cable has to be tested at 500 kv using the above transformer as a resonant transformer at 50 hz . if the charging current of the cable at 500 kv is 0.4 A find the series inductance required . Assume 2% resistance for the inductor to be used and the connecting leads . Neglect dielectric loss of hte cable . what will be the input voltage to the transformer ?

4469