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 8908

why the air gap is necessary in the transformer core

Eskom,

1 6996

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

Bhel, Electrical,

2 30225

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

Alstom, Torrent Power,

2 8691

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

TCS,

2 5500

what is the difference between capacitive and resistive voltage divider?

3532

what is the transformer

5 6660

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

2 4671

is earthing is necessary if we use armoured cable

ABB, Schwing Stetter, Siemens,

1 5788

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

Rolling Mill,

4 12711

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

1 3522

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

1938

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

APPSC,

4 7214

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

2582

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

Sona,

1 4092

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Un-Answered Questions { Electrical Engineering }

What are the conditions to be satisfied for parallel operation of dc generators?

1097

hi everybody how to design string combiner box (scb) internal parameters like bus bar and spd (surge protection device and fuse which place to set that,and also bus bar one particular cross sectional how much heat generated and how much power loss tell me Clearly and briefly

1992

what is the effect of change in supply frequency on load angle of synchronous motor,all other parameters remaining same?

2356

Where can I get CPWD electrical specifications & Shedule of rates? Please help me

2257

why and how current drawn by battery charger depends upon the altitude where it is located?

2039

For a 6.6kV Motor it is recommended to do megger test with 500 V d.c and not more than 5kV d.c but the Hi voltage withstand test should be performed by 12kV AC. Why the dc voltage test should be limited but AC voltage withstand test could be with such a high voltage?

2324

How cmd is calculated in case of energy neters

1915

What is the HVDC Transmission System? What are the conditions applicable to lay an HVDC Line?

2300

What is instrumental error?

1192

What are steps to be taken while designing of DYN11 distribution transformer to achieve magnetising balance?

3541

What is the function of under voltage release ?

1428

why we used dc supply for field in dg set

2389

WHAT IS ELECTRICAL MAINTAINTENCE ?

2094

what r the checklist while installing 500 kva transformer

2330

What are the two major types of control system?

1103

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