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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

why we use ac as a electric appliance in home or daily use?

MNC,

1 2461

I want to apply for ONGC recruitment 2012 .I am BE Electrical but it is mentioned that to apply for this post you have to have Electrical supervisor certificate .so please tell me from where can i get such certificate ???

1 2013

What is mean by spike arrester(Voltage Operated)

Siemens,

1205

Weather power factor correction needed for synchronous motors?

1 2139

is it possible for different brand of H.V transformers to run or operate in parallel to each other? if so how much disturbance can this affact the H.V bus bar?

Unitech,

1214

how can H.V busbar in a powerstation can be protected?

Unitech,

1 2952

how did i get the competency certificate as electricle supervisor. iam completed my b.tech.but i dnt have any experince, this certificate is required for applyng ongc mangement trainees. what should i do sir please suggested me

ONGC,

1071

how to calculate fuse rating for a motor

JSW,

1 4006

what is the difference between MCCB and SFU in terms of their application?

Secure Meters, Tata Teleservices,

2 23873

How can we calculate No load and full load torque of electrical machines, i.e. motor or alternator?

1 2563

Formula to calculate fault current flowing in the neutral line?

1 2614

what is the use of providing earthing for tanks? i know for lightning we use earthing ? Here one of my ONGC project there is no need of lightning protection and there is no power connection near by tank in that situation also ONGC asking earthing for tanks but we didn't understanding why they asking earthing? is anybody tell exact answer?

4 3193

If two Transformers are connected in parallel having impedance of 50KA in both transformers will the impedance increase or decrease after connecting transformers in parallel?

Posco,

1106

What is the formula for calculating impedance of transformers connected parallel at fault level 50KA?

1167

How Can we calculate the rating of a cable?Show the formula?

Jindal,

2 4507


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Un-Answered Questions { Electrical Engineering }

How to select cable the size, what is the parameters use and what is the formulas use for this cable size calculation?

994


What is oscillator circuit?

222


can the measured percentage error during calibration of single phase energy meter be negative?

1228


boiler is running in rankine cycle and deisel generator is....?

1137


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%

995






i want to know d working mechanism of tafe tractors next i like to know d engine type of apache bighs can anyone help me

1299


Describe Non I.S. Earth System and why is it used?

818


can we start slipring motor on star delta like we start induction motor ? if yes where will we connect ?

1090


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

1132


I am experienced with house and industrial wiring but I don't have any licence how can I apply an licence and which type of licence i can get i didn't complete deee just only experience

804


Why the magneti fields are not passes from southpole to north pole

1220


How to calculate KVA/VA rating of PT or CT from primary & secondary voltage or primary & secondary current?

1515


What is meant by short-pitched winding?

208


Why are the cores of large transformers built up of circular transactions ?

1122


How npn and pnp transistor works

201