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

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

earth also having a gravitational force (magnetic field of north and south)but it attracts any object compare to this theartifical magnetic cant perform same as earth why?

1914

How to convert 2 phase to 3 phase electricpower in induction moter?

HCL,

2062

what are all the preventive maintainance carried out in DG?

TATA,

1 3901

what are all the daily preventive maintainance carried out in transformer?

1 3375

what is the use of buchzloys relay?

2 5335

what is the use of breather in transformer?

4 11830

what law motor works?

3 5658

How can we calculate D.C.Load current in terms of A.C. load current?

2 15589

what is emitter follower configuration? and what are it's features?

IBM, TATA,

1 3441

IF HT CAPACITOR IN ON POSITION IS THERE ANY LOSSES I.S I SQURE OCCURS IN THE SYSTEM

2098

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

2963

current transformer cannot measure voltage or not ? then y we use P.T ?

Bhel,

1 2796

what is the procedure for three phase motor differential relay testing can it do with single phase test kit?

ABB,

1 15284

If single phase having 220v so why 3phase is440v.

DLF,

7 23926

please describe the Transformer setting, Motor setting, I/C setting, Tie setting

1728

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Un-Answered Questions { Electrical Engineering }

why we use single core 630mm2 cable for transformer secondary side

875

what sort of general awareness questions are asked in o.n.g.c entrance exam?????????????????

4589

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

1876

ht side line to earth voltage

1524

What type of pipe material G.I or M.S is used for sprinkler system?

9123

Can any answer me ,What will be the range of C.T coil for L&T energy meter EM301 used for 180 kva DG set

2153

What is A check, B check, C Check & D check for a diesel Generat

2073

what is the constructional difference between a power transformer and potentian transformer?

1707

What is electrical grounding?

1092

This is reqd for a 1MW Solar power plant..We have 2DC outputs from the solar panels Connected to 2INVERTOR panels.. Output from invertor is 3ph,280v,500kva,50hz.These are connected to individual ACB.This has to be stepped up to 11KV ,1250KVA SYSTEM.Now can I use (1) one more ACBTO GIVE A COMBINED OUTPUT OF 1000KVA,280V & STEP UP THE OUTPUT BY USING a single two winding 3 ph transformer 11kv/1250kva. or (2)use the two outputs and connect to one three winding transformer of above rating..Pls suggestwith details.

2424

in cvt,there are two windings,1a,1n and 2a,2n.in my one project i use only one winding i.e.1a,1n. the other winding is not in use, so i connect it in open delta and want to close it by ibsertibg thermal resistor. the output of cvt is 132kv/115/sqrt3. plesae tell me exact value of resistor, so i may close it to avoid the resonance phenomenin. send me answer on this email adress please. aetcon-po@aetcon.com

2786

what is motor capacity of 80TR chiller? and also say what is the formula related temperature, motor capacity, TR?

2230

Approach of a cooling tower is the difference between temperatures of what factors?

1082

how much allowable resistance that can be difference in motor all coils?

2277

WHAT IS THE SIGNIFICANCE OF VECTOR GROUPS IN TRANSFORMER? WHAT WILL BE EFFECT WHEN PHASE DISPLACEMENT CHANGES IN TRANSFORMER?WHAT IS THE NEED TO BE PHASE SHIFT CHANGE BETWEEN THE PRIMARY AND SECONDARY WINDING

1744

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