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).

1987

why 120 devided with pole and speed multiplication to determine frequency

1 3772

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 16801

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

2 10612

what is tri state logic gate

2142

why our power production in multiples of 11.

ABB, Infosys,

2 5329

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

1 4323

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

1989

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

5 7607

how to calculate P.F from kva only?

3 6316

what is the difference between equipment earth and system earth.

Hofincons,

1 5416

Wtat is mean by GHOAST VOLTAGE?

3 6315

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

1935

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

8266

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

1984

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Un-Answered Questions { Electrical Engineering }

how desiel generate sart fail of eb?

2152

how to decide the panel size like MDB ,SMDB PANEL SIZES

7303

In Electrical 'Single Line Diagram' cable nomenclature shows "2 X 1C X 630sq.mm to be provided for one incomer. The question is how many cable to be proved for one Incomer.

1711

what is the difference between the characteristics of two different phase bushing of any transformer

1775

What is referred to the electron in the outer orbit?

1107

Is the theorem applicable to ac sources?

994

how many types are their in switchyard or substation(like D,I TYPE), what is differant between them

2081

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?

1822

why the pf of semiconductor device is improved the electrical devices

1808

What is difference between unity power factor wattmeter and upper power factor wattmeter? In short circuit test of transformer the wattmeter used is unity power factor type or upper power factor type wattmeter?

2726

i applied for c licence with my one year apperents trainee and i have attaced with A grade contractor company experiance that is for 14 monts experiance this document is sufeicant for c licence? pls tell why they rejected

2195

How to size Air Circuit breaker (ACB)? What is the most important factors?

2198

What do you mean by phasors?

1029

WHY THE RATINGS OF THE TRANSFORMER IS 33KV WHY NOT OTHER???

2333

why the voltage and current in a long transmission line are called travelling wave?

2184

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