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 66KV is step down to 11KV and then 433v, not directly 66KV to 433v ?

2 8985

Why the cores of large transformers build up of circular cross section?

2333

What is Instantaneous Earth fault relay,how will work

2299

Alternator rotor earth fault relay circuit

2108

why there is a fault occurs, if a phase wire touches ground.. and the fault not occurs when we connect a bulb between phase and ground..??

1 3744

what is the difference between general inverter and solor inverter clerly explain plz

2155

plz explain the snubber circuit unit

1 4992

In EHV transmission line a neutral grounding reactor is often placed at neutral point of shunt reactors. What is the recommended protection for this neutral grounding reactor? Should I use a fast closing switch to bypass neutral grounding reactor when this protection operates?

TATA,

3301

What are the precautions to be taken before working on a cable?

Alfanar,

1 4595

How can you limit the fault level in a power system?

Alfanar,

1 4635

What are the condition for parallel operation of transformers?

Alfanar,

2 5743

What are the point of a single core cable to be earthed?

Alfanar, Jindal,

2 6433

hi i wonder will the speed of a 50hz AC motor reduce if i supply it with 25hz?

Divis Laboratories,

4 6730

why transformer impedance measure in % (percentage)

Hindalco,

4 8908

what effect on electrical equipment if PF is gone over 0.996 in leading when provider say that its keep in minimum 0.996lagging

ABB,

3 7601

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Un-Answered Questions { Electrical Engineering }

i want wipro vlsi placement pattern please send me

1825

Define liftable weight of a transformer? Does the total weight of transformer include oil weight?

2540

how we can come to know that motor winding resistance which showing by DMM is right or wrong???is there any chart or something that we will compare & check???

1977

how can i find ct ratio of meter by seeing name plate of meter and how it should be used in MF calculation if it shows only-/1???

1760

Explain how you intend to work under pressure to meet up with deadline target?

5268

we have require a Motor (1500kW, 6.6kV, 50Hz) which shall operate at 1500rpm during 30min and after it shall run on 500rpm during 15min. The same cycle shall be repetitive during the whole working days. Which method is best and economic to achieve such type of task. VFD, VVFD, Pole changing motor etc.

1972

hi, could someone help me to find a control design for syncronising panel .

1779

How to calculate multiplication factor in kva example 500kva ans pls ?

2022

What is meant by RVT and NDR ? expansion and details of it

3110

Which motor will you choose which can operate in both lagging as well as leading power factors?

1211

Can we indroduce the principle of single phase induction mator to Transformer? i.e. by Producing rotating flux in the transformer.

2367

state types of reflectors in illumination engg. ???????

1992

what is the difference between the characteristics of two different phase bushing of any transformer

1853

how the characterstics of control valve being done

2134

how to calculate earth fault relay current and CBCT ratio

8401

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