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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

How many current ratings of MCB's are in the market? e.g: 1A, 2A, .......upto.

4 16907

when we r using 3.5 cable for a bldg. and put laod on each phase using the neutral and neutral is the return paht for the phase so the current of the neutral must be Ir+Ib+iY (return).But the size of the netural is .5 as comper to the phase.

2 2242

how the reverse power relay acts..

2 3309

directional over current relay when acted & how it works

NCC, ThyssenKrupp,

3 18100

respected sir, sir recentely i have applied for chennai and tiruvananthapur section enggineer and juniour engg in electrical dept. but still i donot get how i have to syart my preparation and also t the same time i donot know exactly what they r going to give in the examinations i mean which sections they r going to give i donot know exactly, can u prefer whichh books i have to follow and model papers or both boards

1 1779

respetsed sir, i have applied for section engg and juniour engg for both chennai and tiruvunabthapur boards for electrical deportments . can u suggest what books i have to follow and and also from which sections they r going ask (i mean weightage and what topics i have to cover) for both se and je for both chennai and tiruvunanthapur boards.......

1 1930

i have some screw comprressor with 630kw power,i have established them with simple star to delta circuit,by the way there is so much inertia when the screw comprressors start, can you offer me contactors power with 400vac or any cataluge to choose the contactors

907

What is type of transformers?

3 3492

what is different between auto transformer and vriac

4 4546

can u tell me the promotion from oiller to enginer

930

Where we give genset o/p in home & industrial applications ?

1 2081

How to back charge the Gas turbine generator

1112

what is the difference between core & shell type transformer ?& where we use those transformers ?

BNCET,

10 40573

What is reactive power?

Suzlon,

7 6007

i want to know that what is the eligibility critaria for ongc exam?

2036


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Un-Answered Questions { Electrical Engineering }

Is there any problem about which the drive (inverter) doesn't show/display the alarm and/or fault but instead of this , it doesn't work ? I want to know that could there be any kind of problem in the drive when the drive doesn't display the alarm and/or fault ?

1057


how to modify DOL control panel into Delta Y connection?

1038


what is the current density of copper & alluminium.

1031


Write masons gain formula.

169


Is there a standard depth of gravel fill in Substation Switchyard? Please give a design/drawing. Thank you.

4077






There are Two questions about Steam Turbine Generator... What is HRSG bypass of LP, HP used for in power generation? In particualar, in the event that fault of HP bypass, there would be STG TRIP in operation but none on the LP bypass fault...what's the reason ?

1373


What will happen if the d.c. Shunt motor opened accidentally running on no-load has its shunt field winding?

181


How a band pass filter is constructed?

166


explain the process of commutation in a dc machine. Explain what are inter-poles and why they are required in a dc machine.

174


why different series of vfds (like allenbradley)are used in industry ?

1328


Why only sinusoidal ac voltages are generated?why not triangular or sawtooth?

1100


If I want to lift the water at a height 50m from ground level through two inch(diameter) metal pipe then what is the capacity of motor pump is required? is it possible in single phase supply or not?

1013


what is earth resistance? how to measured? and give values at power station and mcc area?

1064


Why does amplifier gain reduce?

173


what is the differation bewreen kwh & fundamental kwh in electronic trivector meters

1181