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

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

in elevator industries , how to calculate the required KVA for the elevator (elevator spec- 40A module , motor of 13.5KW, 20A)

DLF, Tata Steel Limited,

1 13813

why the stator is not laminated in DC machines?

4 16453

I am abt to give IOCL intrv.Plz sir guide me for IOCL intrvw (Electrical).Which subject to be consider. questions are generally asked from which subject.Plz help me out.

IOCL,

2062

if we convert kw into kva,which one formula use by us,pls tell me?

ABB, AEC, BGH,

19 28322

if we convert watt into kva,which one formula use by us,pls tell me?

ABB,

16 23312

if we convert Ampers into kva,which one formula use by us,pls tell me?

ABB,

10 14169

if we convert kw into Ampers,which one formula use by us,pls tell me?

ABB, Essar,

9 14580

if we convert kva into Ampers,which one formula use by us,pls tell me?

ABB,

7 11839

if we convert ampers into kw,which one formula use by us,pls tell me?

ABB,

11 20326

How to decide and select the different earthing wire size for the different types of earthing

Suzlon,

2334

What is the safety factor is to be consider while selecting the switchgear and protection for electrical system

1 4674

Input power is 380 - 450 V but with 45 - 55 Hz frequency - desired output is 415 V and 50hz with 1% variation permissible. CVT / Servo dont stabilize the Frequency - what is best solution??

IOCL,

7 11269

What is transformer saturation?

1 4296

every motors written in name plate IP 55 what is this?

2 27132

what is general test conduted by transformer

Wipro,

8 14412

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Un-Answered Questions { Electrical Engineering }

Why PS class CT is always preferred for Differential protection?

1681

in ACB breaker requireding 3200Amps. buscoupler getting OFF mode and again it reset and getting normal position give me a required answer?

2385

What is the difference between the transmission line and distribution line?

1215

what r the checklist while installing 500 kva transformer

2395

hi frenz,its aswathy.i hve aplied for the hpcl test on feb,pls send the test patern & the placement papers as soon as possible. mail-id :kjaswathy@gmail.com

1834

Explain Creepage Distance of Insulator

2263

How seriving & testing of the HT & LT breakers are done. What are the standard Ir values on which we can come to know the test is passed or failed?

2102

Explain how you decide what size of electrical wire do you need?

1190

why single phase to grd test in HV cable?why not 2 phase at a time?

2328

is that a problem if i connect a single phase load to a secondry delta connected transformer but i get a neutral from other transformer i the system?

1910

300m long and 30kw inductive loade 3phase supply how many size cable required

1488

Define corner frequency?

1265

DEAR SIR/MADAM,CLEARLY EXPLAIN ABOUT CRAWLING AND COGGING EFFECTS IN INDUCTION MOTOR.

1955

How may I get the maximum current capacity for a particullar size Alluminum or Copper cable if there is compulsion to use?

1966

Please help me regarding my one concern. - During earth pit testing we noticed that the Clean earth pit and dirty earth pit showing continuity (Resistance value - 5ohm) . I want to know that if both earth pit have separate location and there is not internal looping between PIT then why such continuity is showing on it . Because of this issue the field side all earthing point showing short. In PLC panel we are providing two types of earthing cable which is coming from separate earth pit (Clean and Dirty earth pit) because of earth PIT showing short our PLC is not complying spec . please help regarding this issues.

1649

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