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

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

what are the components in electrical control panel (for example: 415V, 3-ph, panel to operate utility and 3-ph DG set).

2035

why 120 devided with pole and speed multiplication to determine frequency

1 3855

if the transformer at full load have a iron loss =900w and copper loss = 1600w . what percent of the load will the transformer has a maximum efficiency?

3 16940

how determine base of given number like 302/20=12.1

2 10768

what is tri state logic gate

2201

why our power production in multiples of 11.

ABB, Infosys,

2 5438

if name plate detals of a motor or any other is missing then how to find it

1 4389

how to ctrl motor by use of ac or dc drive.plz explain evdintly

2046

how to calculate H.P of a moter from speed of a moter?

5 7761

how to calculate P.F from kva only?

3 6452

what is the difference between equipment earth and system earth.

Hofincons,

1 5494

Wtat is mean by GHOAST VOLTAGE?

3 6426

list of tests to be carried out at manufacturers end while purchasing a step up transformer of 11kv to 66kv ,2MVa Capacity.

1982

why and where we use early make & late break contacts in protection?

8321

1.why we are using blocks in withoutgaplightning arrester 2.why we ar using bushing in withoutgap lightning arrestor

2036

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Un-Answered Questions { Electrical Engineering }

how to determine Sq.mm size of finolex power cables.

2007

v/f drive basic princeple

2473

can anyone tell me can the electromagnetic waves can be reflected back?if so how &by which material it can be reflected back?please tell me so that it can help to my wireless power trasnmission device.

1806

What is Instantaneous Earth fault relay,how will work

2230

am commissioning the trafo without connecting the neutral therefore unbalance will occur what is the alternative solution for this?

1866

what are the application of over current relay?

5248

EXPLAIN THE ESSENTIAL FACTORS WHICH INFLUENCES THE CHOICE OF SITE FOR A HYDRO ELECTRIC POWER PLANT

2251

How to maintain ac plant?

1952

Hi Suppose we have a wye/wye transformer which is grounded at both sides,in this situation, do we have ay ground transformer? in other words, ground transformer can do any thing more (while we have nuetral wire in both sides)? As the last question, what about 3rd harmonic? we have two choices: first using wye/delta transformer + ground transformer and second using wye/wye earthed connection.in the former choice, we dont have 3rd harmoonic at the secondary side but what about Yn/yn conection? do we suffer from 3rd harmonic in the Yn/yn connection?

1968

What is the difference between rulling span and wind span of of an Over Head Transmission Line?

2325

What are your personal skills and abilities for such a Master Course and your possible preparation to undertake this course?

2044

Can an inverter be used as a converter? How?

1945

List the power rating of any 5 important electrical appliances used in houses.

2052

DG cranking voltage?

4759

what is advertised hop count

1775

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