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

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

what voltage to be select in megger for insulation resistance testing to L.V , H.T cables,motors and transfomer?and ohms valve should be giga ohms only or what?

Deevya Shakti Paper Mills,

1 15591

how can motor both beasrings insulation resistance can be check?

GE,

2023

2.5mva transformer is installed in our company with oltc but it is not working in auto mode ,it is operative in manual mode control wiring is done how can i rectify it?

Imdaad,

5 7321

what is the diference beteween dedicated earthing & body earthing?

1 5969

can we use 3 phase UPS for Motors and Other Machines

ACC,

4 10500

how does a current carrying conductor posess a magnetic field. what is the reason for the production of electro magnetic field around the conductor

Vizag Steel,

2 7793

How to know Resistance and Reactance value of main and aux winding of single phase capacitor start capacitor run induction motor to find capacitor value?

Siemens,

2044

how motor should be connected i.e star-delta or star-star or delta-delta ?

GSE,

3 5981

can i used 400A SFU (for the use of PA fan motor),if my BUSBAR rating is only 315A?????answer me quickly as possible.......thanks

1 4092

what is circulating current in parallel transformer???plus how it is generated ???plz explain in detail.........

2 6008

suppose if oil in transformer is not used than what constructional change you will do,for insulation and cooling?

ABB,

2 6195

why dhyedration test required for transformer oil once in a year

1 4143

EHV current carrying parts need to have smooth finish,then how can a 245kv GIS with emery finish can run so long?

1895

what you mean by vector group of a 3 ph transformer

1 3256

can transformer of different kvas be paralled

2 5100

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Un-Answered Questions { Electrical Engineering }

how cables go in and come out for distribution from the feeder pillar box?

2087

What is the difference between relays and contactor construction wise?

2250

What are dependent sources?

1181

What are the section criteria for cables. Now everywhere XLPE power cable is used or PVC is also used?.

1667

induction 3 phase motor terminal connection

2670

how we select ac fuse rating of an power inverter???

1889

What is error of a measurement?

1217

What are n circles?

1094

How much no load current of synchronous motor

2098

A logic circuit that provides a HIGH output if one input or the other input, but not both, is HIGH, is a(n)?

1236

two way ckt diagram can be drawn by how many ways? give diagram

1774

What are the no-load losses for the 11000/415V transformer with the following rated capacity? 1.1500 kVA 2. 2000 kVA 3. 2500 kVA 4. 3000 kVA

1755

When and where resistance earthing is used ? How to calculate the time constant for earth fault

1819

given data are load current & power factor cable core size? plz any one update the calculation formula

1895

what is the sludge current

2121

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