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 is lowest system voltage?

Apex Holdings,

7 8806

only three phases are coming in step down tranformers.how to get neutral?

5 8802

New istallation how many eathing have one transformer? Names of earthing connect places?

10 29334

a bulb of 100W and anather bulb of 200W , rated supply voltage 230v.when supply voltage is reduced to 100v,which bulb will give more light? and why with calculation?

12 36236

if the diameter of a conductor is 'R' then what is the distance between two bundle conductor in a phase?

NTPC,

1 3898

transformers parts & function of each parts

Amara Raja, Bhutan Ferro Alloys Limited, Breather, Electrical, Electrical Tech, ERDA, GVK, Juniper Networks, Matrix, Mechanical, NFL, Oracle, Pyramid Plastics, RPPL, RRB, Siemens, TCS, Tulip Silk Mills,

25 403738

in single phase we get 220 volt and in three phase 4420 v why this second Ques= in case three phase star conection our neutrul becom disconect what happan 3 Q=== a three phase house load and have unbalce load on different pahse diffrent current eg phase a 7A b 8A c 5A and voltage is 440 than how calculate it total load in kw pl give formula thanks

8 11965

WHAT IS SEMICONDUCTOR? EXPLAIN DETAIL. FOR EXAMPLE TAKE A PENCIL.THE LEAD IS MADE UP OF GRAPHITE IT IS A CONDUCTOR.THE OUTER COVER IS MADE UP OF WOOD IT IS INSULATOR.PENCIL IS A SEMICODUCTOR MATERIAL.

5 15976

what is Aircraft earthing and what does it do?

6 27111

Why is the diffrential protection in DG. What if the CT polarity is reversed while connecting for the same type of protection? How polarity can be made ok?

1 6396

what is corona effect?

ABB, Genco, Wipro,

39 95726

what is CT class? depending upon which it is classified?

Siemens,

3 8416

what is automatic voltage regulator and it is used?

ACME, TCS,

28 58837

what is meant by form factor and hoe related with the HT transmission voltage

2 7921

How to make vector group test of transformer?

2 8405

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Un-Answered Questions { Electrical Engineering }

How much current will a 5 HP delta connected motor at no load will take?Is tat need a starter

7759

Do any one know exacatly when the results for NHPC held on 8th march 09 for engineering trainees will be released ?. if so please post it, i'm eager to know it.

2154

is it possible to turn on the single phase star delta on delay timer using 24 v dc ?

2050

Q) Write VBscript code along with QTPscript code in QTP tool for below scenario 1. Launch yahoo site(i know) 2. Do loogin(i know) 3.Click inbox link(i know) 4.Go to every page of mail box and count no.of read mails and no.of unread mails(i know) 5.Store page numbers, read mail count and unread mail count in a new excel file sheet 6.Create 10 types of graphs on that data 7.Do logout and close site(i know) 8.Save new excel files with graph

2497

Which Class insulation is prefered for the sandwich Busducts ? Why?

2031

What types of high speed CMOS circuits have you designed?

2138

How to calculate multiplying factor of dc energy meter

1665

what is conductor copnstant of ab cable

1899

for opening electrical shop, tips needed.

1829

Merits & Demarits of Oil circuit & Air circuit breakers ?

2080

What is the difference between security constraint unit commitment and security constraint optimal power flow?

1710

Define the three phase formula fuse.

1869

I am inpecting a 10kVA UPS what tests should i do and should i observe?

2215

plz tell me,ht and lt panel terminals in substations explain beiefly

2926

how we decide scurt (disc) of insulator with respect to kv rating

3569

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