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 we are testing cables with dc?

1 4312

why ct output is in 5A?

3 5919

why we use copper earthing for neutral while for body GI.

Chennai Metro Rail Limited CMRL, Valeo Lighting Systems India Private Limited,

1 6152

why power factor is important?

Dalkia, MGC,

6 10359

can u describe the method used for protection of transmission line.

IBM,

2219

why impedance relay is used for medium transmission line protection

2327

why they were using TRIAC instead relay in some controllers and what is the advantages.

2022

we have earthmat at 110KV substation.we would like to take earth resistance.b some says that by connecting earth megger terminals (C1,P1) at middile point of earthmat (at riser) will cause voltage gradient at other earthmat nods and dont get exat earth resistance.when connecting at end nods will get exat value . is it correct .please explain

TNEB Tamil Nadu Electricity Board,

2216

I have a small system with two motors that are running on 380 vac, 60 hz. These motors are expensive and I usally get them from Brazil. I am adding another motor to the system, but I want to purchase a 480 vac, 60 hz motor to use. It will be on a VFD that is rated fro 380 thru 480. Is this posible and will I have to use a larger motor and derate it?

US Electrofused Minerals,

1975

what is basic difference between the normal tube light choke and electionic choke ?

Amaron,

4 14025

what is ring main unit(Rmu)? what is its function

1 5093

what is the chemical name for oil that used in the transformer

NCC,

2 5464

How to set the star delta timer setting?

Integra,

1 4629

what is the differance between normal bybass & maintenance bybass in UPS?

1 3897

Generation of voltage for each phase are same of a turbogenerator.Although the short circuit current flow when two phase of turbogenerator are shorted(where current can't flow without potential difference),why?

2117

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Un-Answered Questions { Electrical Engineering }

What are the factors influence the choice of an electrc drive?

2078

WHAT IS SPEC OF CLEANROOM MOTOR AND LIGHT FITTINGS?

2313

Which type of DG need Netral Earthing?

5302

Why you want to join non technical field when you are an engineer?

6748

how to know the diffrential relay setting of 06mva step- down (delta-star)transformer?

2027

For refrigerators the motor current is raised beyond its rating on both conditions when the voltage of the system is more(say 270v) than the rated voltage(220v) as well as when the voltage of system is less(say 160v) than normal voltageof 220v, why explain?

1972

why we are not giving the zone 1 trip command to the master trip relay

1730

dear sir, i completed diploma in electrical in 2005, how i can get electrical supervisor liance in mumbai

1967

a governer in an Ic engine controls the

1190

what is meant by neutral compensation factor and where it is used

1911

What is line resistance of cable & how it can be measured ?

1513

ACCORDING TO IEC WHAT SHOULD BE THE MINIMUM HEIGHT OF G.I. STRUCTURE OF CT, PT, ISOLATOR, LA?

2199

Load break swicth maintenance procedure.

1766

Whether 3 phase induction motorwith 100 hp capacity , Amp 160 for which sensitive earth fault relay , type CTUM 15 can be used?

1504

How to reduce -234126219.6403 MVAr generation and by what?

1631

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