Electrical Engineering Interview Questions
Questions Answers Views Company eMail

Why we are testing cables with dc?

1 3476

why ct output is in 5A?

3 4869

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

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

1 5062

why power factor is important?

Dalkia, MGC,

6 8366

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

IBM,

1623

why impedance relay is used for medium transmission line protection

1824

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

1525

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,

1728

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,

1538

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

Amaron,

4 12310

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

1 4261

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

NCC,

2 4501

How to set the star delta timer setting?

Integra,

1 3618

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

1 3107

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?

1654


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Un-Answered Questions { Electrical Engineering }

what kind of quetions will ask in BHEL in interview? Plz help me?

1584


1) why a dg set shows variation of power factor and load when synchronised with other dgs? 2)Why the load sharing is not become equal in all dgs?. 3)When a dg set will not run on auto start?

1544


Why the cores of large transformers build up of circular cross section?

1751


can anyone explain the star-delta motor control wiring ,which wire go where and how they operate?

957


What are the special cables required for explosion proof wiring?

2990






2- What are the percentages between excitation currents in phase (R, S and T) in ∆ and Ỵ connections in excitation Current test in transformers?

1598


how we decide the require size is this for a known current at fuu load?

1435


Explain the operation carried out in thermal power stations?

620


A mass of 1200g is accelerated at 200 cm/s2by a force. The value of the force required is:(a) 2.4N(b) 2400N(c) 240 kN(d) 0.24N

2157


my name is venkat .i have good percentage in my academics(ssc 86, intermediate 83 b.tech 73) my question 1..after completion of my ssc i joined in bpc but i didnt got rank in emcet so i completed MPC in one year compartmentally ..so here what am expect question from this background?

1468


WHAT IS THE TECHNICAL SPECIFICATION OF C CURVE & D CURVE LEGRAND MAKE MCB

2088


What is bode plot?

815


What is a Phase shift meter? Where can I get one?

1664


How to set a Zone 1 distance relay for distribution feeder?

1557


How to improve fuel cell in a distribution system?

1530