Electrical Engineering Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

Why we are testing cables with dc?

1 4221

why ct output is in 5A?

3 5786

why we use copper earthing for neutral while for body GI.

Chennai Metro Rail Limited CMRL, Valeo Lighting Systems India Private Limited,

1 6059

why power factor is important?

Dalkia, MGC,

6 10122

can u describe the method used for protection of transmission line.

IBM,

2166

why impedance relay is used for medium transmission line protection

2262

why they were using TRIAC instead relay in some controllers and what is the advantages.

1975

we have earthmat at 110KV substation.we would like to take earth resistance.b some says that by connecting earth megger terminals (C1,P1) at middile point of earthmat (at riser) will cause voltage gradient at other earthmat nods and dont get exat earth resistance.when connecting at end nods will get exat value . is it correct .please explain

TNEB Tamil Nadu Electricity Board,

2178

I have a small system with two motors that are running on 380 vac, 60 hz. These motors are expensive and I usally get them from Brazil. I am adding another motor to the system, but I want to purchase a 480 vac, 60 hz motor to use. It will be on a VFD that is rated fro 380 thru 480. Is this posible and will I have to use a larger motor and derate it?

US Electrofused Minerals,

1920

what is basic difference between the normal tube light choke and electionic choke ?

Amaron,

4 13821

what is ring main unit(Rmu)? what is its function

1 4944

what is the chemical name for oil that used in the transformer

NCC,

2 5346

How to set the star delta timer setting?

Integra,

1 4518

what is the differance between normal bybass & maintenance bybass in UPS?

1 3814

Generation of voltage for each phase are same of a turbogenerator.Although the short circuit current flow when two phase of turbogenerator are shorted(where current can't flow without potential difference),why?

2061

Post New Electrical Engineering Questions

Un-Answered Questions { Electrical Engineering }

please send me last 5 year interview questions

2164

Write down the name of 2 lady Bir Pratin of Bangladesh

1854

ACCORDING TO IEC WHAT SHOULD BE THE MINIMUM HEIGHT OF G.I. STRUCTURE OF CT, PT, ISOLATOR, LA?

2128

Can XLPE/SWB/PVC (P3) 7C X 2.5mm2 be replaced by Can XLPE/SWB/PVC (P2) 7C X 2.5mm2??? P3 vs P2

1819

hi I have done 3 yrs diploma in electrical engg after 10+2. I have 16 years of work experience into design proposals sales and engg application development in LV/MV swithcgear and sub station automation field. I want to apply for immigration to new zealand but I am not sure whether I qualify or not since I dont have a degree. Can anyone advice? Thanks Riz

2216

What is NGR . What is the purpose of 10 sec ,60 sec rating of NGR.

1622

Greeting to all members, How to calculate spill current when we have different ratio CT and Class for REF(Low Imp) I have 500/1A 5P20 @line side n 400/1A CL.X @ Neutral.

2945

mention hazard experienced during installation

1936

What is grid collapse? what is the reason for it?

2059

what is the use of piston rings in the engine used for a generator...........

2153

why steady state stability limit is greater than transient stability limit ? How it can be explained ?

2867

what will happen if frequency is below 50 hz?

1962

when we gave dc supply to 220v dc motor its rpm is 1200. then we gave 180v. how many rpm of its motor. gave answer with calculation at my ID.... ravizak@ymail.com

2302

Whar is the KvA rating of 33Kv substation & actual kv rating of power generaating station.

2337

We have 750KVA DG set, we want to introduce REF relay with 1250/1A,CL PS,Current transformers.The lead distance of 2.5mm copper flexible cable from CT to relay is around 5mtrs.We would like to know the knee point votage(VK) & IM calculion for CT's

1875

For More Un-Answered { Electrical Engineering } Questions Click Here