Electrical Engineering Interview Questions
Questions Answers Views Company eMail

400 kvtransmission lines in india are connected in star or delta

NTPC,

10 11585

what is apparant power and reactive power

2 5664

1.what is surge used in power system 2.what is switching used in power system 3.what is lightning used in power system

Areva,

1 3301

what is meant by surge? what we called for high currents?

1484

In hydel power plants, L.A's, S.C's are placed inside the control panel boards. what is the purpose? [already the total body was earthed to ground.]

1438

hi friends if you have any 400KV Substation Erection and installations Drgs please send to me.My email id:kandi.suresh441@gmail.com

2387

which winding aply in an alternator?

3 4404

if an insulated power and control cables of a running gas diesel gensets laid direct in an open trench i.e, trench bed is not rcc of a power house in which rain water, spillage water alwas exists and all power control cables remains submerged even when gas gensets of 480 kw each runningin on load. These power &control cables runs from power house to switchgear room through these trenches in which water remains most of the time. pl explain its merit & de-merit

1401

How power factor of a transformer is calculated

3 4574

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

1 2992

what is the minimum recommended leakage current of an earthed cable connected to the body or skid of an alternator

1607

there is an alternator 480 k.w, 400v,50hz, 4-wire running on load having leakage alternator body earthed current 38 A. is it within acceptable limit? if yes then give reference if no then how to bring within specified limit

1491

how hazordious area is classified at an oil & gas plant and categorise suitable class of electric equipment in that area like induction motors, LCS, Lighting Fixtures Fluerescent/Flood lights Mercury& sodium lights, J.Bs, Power Cables etc

1346

What is magneto on a gas generator. how it functions. its out put is d.c or a.c. how it can be checked for correct functioning

1502

What is ignition module of a CAT Gas Genset G-3508 Engine, Alternator SR4B Series. HOw its checked for correct functioning.Is it repiarable or replacable?

1718


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Un-Answered Questions { Electrical Engineering }

What is the difference between solid grounding and impedance grounding?

1532


how we start 40w tube light with 4 diodes,2capacitors,1 choke and without starter.(a product avilable in market which lights burnt tube lights also)

1625


how to calculation increase power factor for single phase

1815


Can anybody inform me about the pattern of ECIL GET( Graduate Engineers Trainee) interview for Electrical students? Will there be HR round as well? I thought of preparing for 2 to 3 subjects thoroughly. Will it be sufficient? Please share your thoughts.

1703


Define maximum demand?

642






Why 1/3 is used in symmetrical components?

1375


If two Transformers are connected in parallel having impedance of 50KA in both transformers will the impedance increase or decrease after connecting transformers in parallel?

1533


What is the difference between earthing,ground&nutral?

5414


for 5KW resistive load can anyone please suggest me whether to go for UPS/Inverter or Generator depending upon cost calulations

1603


How to protect a Dosing pumps/any sensitive equipment (single phase) from surge protection inside a food factory.

1270


Define delay time.

647


WHERE NEUTRAL WIRE IS CONNECTED AT DOMESTIC TO TRANSMISSION LINE(SINGLE PHASE TO THREE PHASE)

1335


Under wat condition statcom operates as an inductor for the transmission line?

1422


if sf6 gas low in gis what will happen

372


How to Calculate Transformer Earthing Electrode Rod Size both Body and neutral Earthing ? Any Standard Formula? Please Suggted

1135