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 star -delta motors normally first operated in star mode {absulated given (r-y-b) phases after one miute change in delta mode in this case i am change phase sequience for example R -PHASE TO CHANGE Y-PHASE ;Y-PHASE TO CHANGE R-PHASE SO THIS TIME MOTOR WILL HAPPEN RUNNIG MODE EIGHTER(OR) STOP MODE(TRIP MODE)

MacLellan,

6 8687

why the air gap is necessary in the transformer core

Eskom,

1 6926

what is difference b/w squirrel cage rotor and wound rotor

Bhel, Electrical,

2 30117

what is the RMU and RMU system in sub-station(11kv,66kv.....)

Alstom, Torrent Power,

2 8592

why only dc is given as excitation...why not ac???

TCS,

2 5395

what is the difference between capacitive and resistive voltage divider?

3459

what is the transformer

5 6474

Is there any design in the world a 220 KV transformer without breather …??????

2 4578

is earthing is necessary if we use armoured cable

ABB, Schwing Stetter, Siemens,

1 5701

how do we select a copper power cable for a 10 HP, 1440 rpm, 440V, 3 phase AC motor?

Rolling Mill,

4 12537

How can ignition voltage of light increased with the help of a ballast

1 3453

Can anyone explain me about the RLC based Impulse high voltage generator and how to and operation of Series resonant High voltage reactor...?

1898

what are the changes made in induction motor so that it act as induction generator

APPSC,

4 7047

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

2539

make control wire diagram of start and stop a function with a single push button

Sona,

1 4015

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Un-Answered Questions { Electrical Engineering }

PLEASE INFORM ABOUT THE IDEAL TEST RESULTS OF MAGNETIC BALANCE TEST OF TRANSFORMER 33/11 kv DELTA-STAR T/F

2175

why +24 v and -48 v give to BTS? If -48v protect from surge then why we not use -24 v?

1790

sir pls send the je exam - 2008 and other model question papers..

2025

1.WHAT IS A SMART CAPABLE DB ( DISTRIBUTION BOX) ? 2. HOW TO DECIDE THE TYPE OF DB TO BE USED ( RECESSED/ PLUG TYPE/ SMART ETC ETC? 3. WHAT IS MILLENEUM BUS BAR USED IN DB? 4.DIFFERENTIATE MCCB AND MCB.

1784

Why current shoots up in the secondary on the knee point voltage during saturation test of CT? How core saturation effects the secondary current (while the primary side is open)? What the logic behind this?

1971

What is the distance between each insulator in 33kv transformer and how can it calculate

2140

I am getting above 60 V as open delta voltage against single phase unit ICT at tertiary delta formed and ICT getting trippped on NDR. ICT tested and found in order. PTs provided on tertiary are tested and in order. what may be the reason?

1967

how is calculated the quantity of weight in hot test xlpe?

2468

How npn and pnp transistor works

1082

why core is useful for a transformer ?and also in its operation ?

2053

I am a possesor of c licence from 1993. I forgot to renew during the year 1998. During that time I was working at TNEB to till date. Is there any possibility to get renewed? or to apply for a new one?

1996

why we cannot protect 100% winding of an alternator by using differential protection?

2211

why do we have spikes enough to burn electronic boards, when generators are not grounded

1774

magnetizer priciple

2024

What is instrumental error?

1156

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