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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

Synchrounous motor is three phase motor,but its not self starting .why?

Delta Beverages, KI, L&T, NTC, TVS, Wipro,

22 46604

Clearly Define Active,Reactive,Apparant power.Which applications used which power above metioned power?

Summit Power,

9 20229

what are the basic concept to design a out door Substation?

1 6366

Why we call cable rating in SQ.mm.If it is 240 SQ.mm how much the diameter possible?is there any calculation ?

4 16492

What is mean by CT Saturate? how do we calculate?

ABC,

5 8753

how to use single phase supply for a three phase equipement.

12 16083

specific gravity of a battery?

6 11396

In India which type of PLCC IS used?

Cipla, Ford, Jayashree,

2 9553

In Ferranti effect,Receiving end voltage is greater than sending voltage,why? can anybody tell me the answer

Engineers India Limited,

15 43914

how to calculate no. of earthing pits and their diamensions? no. of lightning arrester rods which are required to protect a building of 35 mtr and we calculate?

Dharampal Premchand Limited, FlowMore, Hindustan Zinc, Ispat, Maheshwary Ispat, NDDB, Siemens,

5 25158

What is Ohms law?

College School Exams Tests, KPTCL, L&T,

28 25283

how am i achived model paper to prepratio for bhel exam

Bhel,

2 5380

What is the meaning of TRI Vector meter?

ABB, Excel Power Switchgear,

7 28085

how to calculate knee point voltage of current transformer?

Bhel, Bhilai, Jackson,

20 144141

11kv/0.433kv, 2 mva , transformer , for protection and metering how many CT/PT are required?

Bhilai,

24 28730


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Un-Answered Questions { Electrical Engineering }

Why do we pefer VCB over OCB?What are the advantages of VCB over OCB?

1858


i am completed diploma in ece,and working in ht and lt lines.so is elligible diploma in ece for get electrical C Licence?plse give ur opinion?

1181


what happen if drive input fail momentry at 48.5 HZ frequency?

1346


Why PT voltages are measured with respect to ground? What do u mean by voltage or current polarized.

1756


why most of junction box vendors providing T5/T6 Temp class jb's for T3 area any special reason?

1417






Difference between ac parallel circuit and ac series circuit?

1429


how to calculate differential current when we testing differential relay..suppose we have 1000kw generator,630amp VCB,what value we should put /inject so that relay trip the VCB? PLLZ justify ur comment

1010


(In MEP services) HVAC in AC Plant room what else can we provide if the chiller is not considered?

1400


tan delta equation test on alternators

1581


The sodium vapor lamp is not glows when it is connected a distance of 5 meters above from gearbox, why ?

3035


use of choke in APFC panels

4587


what happens if dc supply is given and the remedies for it.

1106


how does a submersible pump work..?

1234


how to identify conection leads of an unknown electric motor

1384


can we synchronize star system generators with delta system transmission line ? and how ?

2143