Electrical Engineering Interview Questions
Questions Answers Views Company eMail

Dear All we are having a problem in G120 BOP showing alarm A0503, F0052, F0060 we can not remove fault alarm ,Please any body help us. kowsar

TCCL,

260

advantages and disadvantages of inverse definite minimum time RELAY

154

why high speed tripping relay is used in protection circuit why not normal relay

154




why high speed tripping relay will be used in tripping circuit why not normal relay

155

what are all the components required to assemble solar panel other than pv cell?

180

Anybody tell me about modbus hex address of l&t trivector meter er300p??I want to read voltage,current,kwh etc via rs485...If anybody have a manual then send on my mail..Brijeshmodi18@gmail.Com

131

how to find the voltage's of a transmission line plzz help with pictures i am not able to understand

Student,

90

I meggared my 2c*70 sq mm AL AR XLPE cable. its one end show 50 M ohm . is my cable is safe for laying. I have only one phase and neutral.

226




How the over load setting for HT Motors calculated-provided in Numerical Relay

Damodar Valley Corporation,

255

whether starting current is limited to rated current of motor through soft starting or it exceeds the rated current?

DAE,

275

What is slope...? Explain slope 1 and slope 2...?

274

How to calculate main incomer rating of APFC Panel ? Let's say i want to find main incomer for 11kV, 1000kVAR Panel.

201

if we apply 1000ADC instead of 100ADC or We apply 50ADC instead of 100ADC,What will be happened in the test result value.Pl explain

NCC,

200

How to discuss the phase shift of transformer considering open delta?

215

Whether 3 phase induction motorwith 100 hp capacity , Amp 160 for which sensitive earth fault relay , type CTUM 15 can be used?

ONGC,

151


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Un-Answered Questions { Electrical Engineering }

We are planning to synchronized DG's with our captive plant in the event of black start of plant, but before sync we checked voltage of DG with our plant voltage and it varies from 5 V to 450 V. So in this condition how we can sync DG with plant ?

234


Good morning: I'm looking for some informations about the OLTC or the LTC: I wont to know what the function of the tie-resistor in during the operation of reversing/coarse operation Cordially

861


What is the formula to calculate distribution transformer De-rating on iron losses basis

668


i need list of swg(standard wire guage) or area of conductor v/s current carrying capacity of conductor copper & alluminium...

646


new 90kw motor installed so how I purchased cable ,fuse,etc please give me technic for cable selected why always capacitor delta connection

684






What facility we get after CT secondary earthing and how?

1023


As a electrical engineer.. what are the basic norms should follow in transformer oil testing.. 1.What is the Electrode type? 2.How long time you will give for oil testing?

2328


What are the electrical engineer roles and responsibilities in chemical plant?

407


i karmveer bharti persuing b.tech . plz send me syllabus and name of reference books. for preparation of section eng.

899


for opening electrical shop, tips needed.

502


What is super thermal power plant? and how it will differ from normal thermal power plant

1113


how is find out kwh step by step

586


two phases with neutral supply can be taken in 3C X 10 sq.mm cable .

267


0.5,1,1.5,2.5,4.0.6.0,10,16 square mm electrical wires how much take maximum current in 50htz

994


What happent when a AC motor(no break and starters ) stop and suddenly start . ? Starting current low or high?? Why?

293