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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

what is the basis for selection of Protection CT class ? How anyone can decide whether to go for 5P10 or 5P20 ?

3 4180

What is PCCB?

ICEL, Schneider,

3 5353

Why LT cables are not sized based on short circuit capacity.

3 3767

I am final year b.tech student..i applied for gate but i am not interested any of my engineering subjects. i am interested in management wise.. is my option correct after b.tech..

1 2145

Hi,I am working in abroad for more than 3 years in a company operating with 11kv and 6.4 MW power. I need c licence in India,can I? some other says only i can get if i work for 2 years in india only! anybody kindly clarify by doubt.Thanks

1043

IN A DY11 GROUP DISTRIBUTION TRANSFORMER WITH NEUTRAL EARTHED, WHAT WILL HAPPEN TO THE SYSTEM VOLTAGE & THE EQUIPMENTS IF EARTH GETS OPEN ON LOAD?

2 3982

where we use the SFU & FSU?

L&T,

1445

Why Auto Transformer is called "Auto"? What is the logic?

1 2631

my UPS is 600VA with 0.6 p.f and i use it for my computer which has 450W power supply unit, a monitor of 633nW and speakers. Can any one explain this.. because the output of UPS should be 360W (<450W)

2 3420

I have been using an 600VA with 0.6 p.f UPS with my desktop which has 450W power supply unit. Can anyone explain how can this happen . Because the output of the UPS is 360W (600*0.6) (<450W)

1236

what is meant by generator differencial protection?

1 2144

what is meant by residual over voltage & residual earth fault ?

7754

in 400 kv system why should trip both side CB when we give hand trip?

KPTCL, NHPC,

1 5370

Why material of brush is carbon in motors why not other material.

NTPC,

5 6244

how to mesure the earth pit value and what is the minimum value of single earth pit?

3 4078


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Un-Answered Questions { Electrical Engineering }

How a band pass filter is constructed?

168


What is the Nyquist criterion regarding control systems?

199


How we can defined theecopper cable size if we know the aluminium cable size?

883


What is measurement?

196


what is subtransient , transient and steady stateac components

1266






hello friends..... any one have papers or any study materials?sail ,hpcl...?

968


Could the power factor on electrical system can affect the registration of the kwhr meter or the CT/PT? 

1008


What are the Formula of computing Back up Time of 500kVA UPS with 4 Battery Banks, each bank composed of 43 pcs of Batteries 12V150Ah. How to compute the Back up Time of UPS? We have also 3X500kVA UPS running in Parallel same composition as I write above.

447


I FINISHED MY B.TECH IN EEE . I AM IN NEED OF A GOOD TRAINING INSTITUTE TO DO COURSES .. CAN ANYONE SUGGEST GOOD CENTRES IN TAMILNADU ,BANGALORE ,OTHER AREAS???????

954


An 8 pole, 50 Hz, 3-phase IM is loaded to a poing where pull out torque will occur. The rotor resistance per phase is 0.3 ohm and motor stalls at 650 rpm. The slip when motor stalls is A 1 B 0 C 13.33% D 10.33%

962


explain with diagram how to protect transformers and substations from over current with help of CT's?

1085


can you any one give exact mathematical relation between AC current and DC current?

929


state the working of discharge lamp?

1111


what is doid

1700


how i chosse capacitor bank if my energy meter is 48 kvr? tell me capacitor bank chossen formula?

1481