Electrical Engineering Interview Questions
Questions Answers Views Company eMail

which protection function should measure RMS value of current&DFT value of current?

1441

what are the analog quality input for protection function?what are minimum reqiments?

1390

what's prime importance of protection in electrical system.if protection system don't work properly what can happen in electrical system?

1406

what types of fault occurred in transmission line ? which protection function senses the fault?

1 2495

What is the name of powder which is used in inner side of a cable? and purpose?

1 3340

If single phase supply is 220v. then why three phase supply is 660?

2 4227

what is the constructional difference in generator if we want to genearate 6.6kv instead of 440v?

Anglo Eastern,

1 3537

I am an electrical engineer, I found variation in KWH between DG and EB for Same load for same duration, can any one help me why this variation arises?

1 3033

What is UPS and How do you maintain the UPS Maintenance? Brief Description on UPS maintenance.

JLL, Nokia, Uttam Galva,

2096

What is difference between MCB,MCCB,ELCB and RCCB? Brief description and why RCCB is costly?

JLL,

3 8544

how to calculate Transformer loss?

1 5683

transformer is connected with 50hz and 60hz at same rating which will give more output on same rating

Palace Consultant,

2 3035

concept of busbar and load dispatching..?

1902

As a electrical engineer.. what are the basic norms should follow in transformer oil testing.. 1.What is the Electrode type? 2.How long time you will give for oil testing?

NAL,

3063

i have 6oo kva dry type transformer and its neutral is not grounded even body of transformer ground i want to know it is safe or not ?

2 3365


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Un-Answered Questions { Electrical Engineering }

what is mean by Digital Logic Meter (DLM)

1832


Why is better to have a minimum ceiling voltage of 250% than 160%?

1380


where is the need for short circuit test for 3 see is required and why? can you explain in brief with application

1380


How to define Kirchhoff current law and voltage law along with simply examples.

1189


WHAT IS DIFFERENCE BETWEEN CAPACITOR AND CAPACITANCE?

1442






if voltage bt phase & nutral is 38v in a panel board . whats the root cause.

1787


what types of cable used in underground coal mining?

1029


WHAT IS LOAD CELL

1667


difference between ac series and parallel circuit

1446


High speed earth switch operation with diagram

1862


what are the factors to be considered while design the breaker either HT or LT??

1382


there are cam operated switches - why we call cam operated , What is cam ?

1446


How we can come to know the substation range,without go through any name plate ?

1453


What happens if we run alternator on under frequency? 

1614


what is the differance between HT motors And LT MOTORS.

1513