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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

why voltage drop will occurs in 3 phase line?

ABB, Servo,

12 22430

As all us know that the capacitor panel is connected to improve the power factor when it is PF is low. whether we can connect the capacitor panel on D.G. side(? If it is yes means why?

Aricent, Essar,

1 5354

How to dimensioning SDCCH, LAPD and CS7 signaling on GSM?

 1 6459

HOW TO CALCULATE THE CAPACITOR RANGE FOR LOAD FOR PF IMPROVEMENT? EXPLE:FOR 65 HP LOAD HOW TO CALCULATE CAPACITOR RANGE?

Al-Malik, All Star Electric, GEC, Reliance, Universal Industries,

12 42568

what is full form of lv and mv? 2.while we connect capacitor to generator what will cause for it?

ABB, Wireman,

4 29969

hw to calculate flc of motor ? data are:3-phase,50Hz,30kw

BRG, Reliance,

6 25618

how to find motor contactor rating and bimetalic relay rating? of 30kw motor which will operate on star-delta starter?

HCC, L&T,

6 19103

wht factor are considered to design ACB( air Circuit reaker) 415V

 3 5493

hw to find transformer is in normal position? whether its in charged condition or not? except humming sound?

ABB,

9 11545

How can we calculate the fault level of the distribution system knowing the percentage impedance of transformer & subsequent equipments.

 14 55961

WHAT HAPPEN WHEN CT SECONDARY OPEN DURING LOAD

Neco,

16 28256

HOW VFD USED IN ENERGY SAVING

ITC Infotech,

8 26039

whether the generating voltage can be made to be transmitted by means of signals to the recieved end or at the consumers end?

TCS,

6 7493

How do we check transformer losses and what are the ways to minimise it.

 5 13742

if earthing is used in place of neutral how the circuit completd.

Epitome,

7 12821

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Un-Answered Questions { Electrical Engineering }

orifice sizing how done, checking & selection

1384

State the types of distortions in amplifier?

669

what happens when series resonance occurs?

1381

How many turns are there in primary winding? (In Transformer)

1203

We need to current density & short circuit calculation at 65kA for aluminium & copper busbar.

1234




what is the significance of cabability curve of alternator

1791

Explain the working of variable frequency transformer?

635

what would happen if reactive power (kvar)is increased (more)or decreased (less)? how much exact reactive power should be maintained? and what should be done for that

1765

what is the function of bearing in dc mchine" and where it is placed

2063

I have one ct of ratio 3000-2000/1 Amp its knee point voltage mentioned on name plate is 500-333/30mA-50mA at Vk/2. in secondary box there is three terminal named 1S1, 1S2, 1S3 then on which terminal obtained the knee point voltage ie 1S1-1S2 OR 1S1-1S3 & also specify the knee point voltage for the ratio 3000 from name plate.

1956

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

608

What are the different circuits in thermal power plant?

702

how to extend relay operating timing in 24V dc relay card (without using Timer )

1448

why i can not use thimble on capacitor duty contactor

864

can anybody send me syllabus of rrb section engg (electrical). and also send previous question pepar...

1554

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