Electrical Engineering Interview Questions
Questions Answers Views Company eMail

Which one is easy to control AC or DC Machine?

BARC,

2 5575

HOW COULD A SINGLE PHASE INDUCTION MOTOR ROTATE IN OPPOSITE DIRECTION???

3 9335

what will be the energy loss =? Voltage drop = ? Conductor resistance at 20 degree C = ? Temprature convertion Factor at 50 degree c = ? on ACSR DOG Condutor at following data. distance = 4.8 kM Load = 2980 kWh Size of Conductor = 6/ 0.186 Volt = 11 kV.

Pakistan Atomic Energy Commission PAEC,

1 4518

How we calculate the average power factor if the one phase is lag and another one is in lead?

DigiTech, MCR,

1 3305

corona happens more in ac or dc?

MAHINDRA,

5 8133

tell me about xlpe cable?

IOCL,

1 3749

Whether the over frequency protection is turbine or alternator and why?

Marg,

1 2968

what is the difference between ceiling fan and wall mounteed fan technically

3 7309

Can anyone explain the power flow in flouresent lamps (tube lights) .What are the functions of Starter & choke used there?

1 3144

why we use star and delta connection?why we donot give the supply directly?

Hitech, Siemens, Tata Steel Limited,

12 55166

WHAT HAPPENS IF STARTER OF A FLUROSCENT LAMP IS SHORT CIRCUITED AND WE PUT THE SUPPLY ON?

1 3504

corona happens more in summer or winter?

MAHINDRA,

3 5924

What phase difference between p and s winding of transformer

MAHINDRA,

1 4605

the rating of fuse wire i always expressed in what?

3 15054

Why do we use series motor to start our car?

2 3742


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Un-Answered Questions { Electrical Engineering }

what is transient voltage?

1781


how to calculate the earth mat design in 132 kv substation yard ????

5710


What is force on parallel conductors ?

631


What is the current carrying capacity of 0SWG,3SWG,10 & 12 SWG solid bare overhead copper conductors?

2943


in 1-phase 230v,how in 3-phase 440v. in each phase in between 230v.

2345






what is the reason for indication of light in the earth lamps of main switchboard.if there is an earth why does one lamp get dim and the other two bright.

1865


How are load losses and no-load losses measured at site in a DG set?

1300


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

1474


The power supplied to a 50mH inductor from a 120V, 60Hz source will be

4190


I have 4 busbar of 1000 ampere. we use 4 busbar to make 4000 ampere in one phase.my problem is that when we applied 60% load on that then busbar produced high noise.what is the reason of that and how can i minimize that noise.

1278


where we use the SFU & FSU?

1971


Thermal withstand capability under full short circuit conditions, in terms of number of times of occurrence of short circuit and corresponding anticipated percentage reduction in transformer life.

1958


is there any device that works properly accept relay, it may be fuse but if i want fuse of 33kv 300 amp it is avaliable, pls give me details

1557


Dear Brother can u tell the proper size selection of cable & the fault level calculation of braker, busbar etc. pls mail me at azeemk30@gmail.com

1421


what r the checklist while installing a 380 kva DG set

3309