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

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

why to use 50hz only in tansmisson and as well as in distribution why not60hz?

2 4433

In a overhead system why the voltage between line &ground is taken for basic comparison ?and in case of underground cables the comparison take only by the voltage between cables?

L&T,

1 4012

how dc generator produce voltage initially?

Bisleri,

1 3673

the single phase voltage is 230 volts and threee phase is 430 v.why three phase is not 660 v?

2 7832

which relay is used for both detection & correction?(there is only one relay)

2 4651

the 230 value of voltage which is use in our home . is that value is rms, aerage or peack value of voltage?

L&T,

5 9015

wath is this mining of bts

Nokia,

2 4893

wath is this mining of dg

Nokia,

2 4531

wath is this mining of bts

Nokia, TATA,

1 3313

WHAT HAPPENED DC SERIES MOTOR FIELD WINDING OPEN. CAN POSSIBLE.

1 3905

What are HT & LT Cables? What are their values?

IOCL,

3 6626

What are armoured cables?

IOCL,

2 5029

What are the layers of protection over armoured cables?

Accenture, IOCL,

3 5703

What are insulation classes? Tell examples of each of them.

IOCL,

1 4009

What are the different types of circuit breakers?

IOCL,

3 5960

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Un-Answered Questions { Electrical Engineering }

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

2052

What are stable systems?

1092

if the armature current in a dc generator is ac ( sinusoidal ) why doesnt the sjhape af armature mmf a sinusoidal (ni) ? armature mmf in case of a dc machine is triangular.

1970

what happen ehen synchronisation is done at below rated speed

2149

Advantage of LT panel vs HT panel

2931

IF I KNOW THE AREA OF CROSS SECTION OFTHE WIRE , WATTAGE OF THE LOAD ,VOLTAGE SUPPLY WHAT IM GIVING TO THE LOAD AND ALSO POWER FACTOR OF LOAD ....... SO GIVE ME FOR WHAT AMOUNT OF CURRENT I SHOULD USE WHICH TYPE OF CABLE?

1897

what is the difference b/w absolute encoder and incremental encoder?

2076

I WANT TO INSTALL LIGHTING ARRESTOR ABOVE 20 FEET HEIGHT INDUSTRIAL BUILDING. NOW IT WAS 15 FEET HEIGHT HOW MUCH DISTANCE IT WILL COVER & HOW TO CALCULAT THE DISTANCE COVER BY THE ARRESTOR

1996

What is the difference between Static and servo controlled voltage stablizer?

2181

At the starting of dc motor and syn.motor and induction motor high current flowing through the winding. Due to this the windings burnt out. To avoid this different types of starters are used. But incase of transformer what Will be used (At starting no emf is induced in the primary winding)?

2031

What is deference between MCB & MCCB & ISOLATOR

2119

What is FM200 Gas??Applications........

2373

What is the transfer function?

1084

what is differentila pilot supervision in the incomer control panel in the power station?

2099

If we need4× 50mm sq cable but it's not available so we can pull 4×25mm sq 2cables

1477

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