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 Categories >> Engineering >> Electrical Engineering
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Question Asked @ Answers Views     Select
How to determine earth fault level to set relay for a normal distribution system of 11 kV , 100 A load???????? tcs   1  1185
Does the isolator has a making capacity????????    2  1552
Why the meters sonnected to metering core of CT are not damagedon event of a fault??? Explain the phenomena?? schneider   1  1604
When we use air circuit breaker, it has O/L protection ,time delay SC protection, Instataneous SC protection & ground fault protection. They all have some setting range. But what is the suitable/allowable setting for the above protection which will be safe for the equipment? For example-O/L protection setting have a range of (0.4,0.45,0.5,0.55,0.6,0.65,0.7,0.8,0.9,1.0)xIn Time delay SC protection have a range of (1.25,1.5,2,3,4,6,8,10,12)xIn Time delay setting is 0.02,0.1,0.2,0.3,0.4 Instataneous setting is fixed to 20xIn Gound fault setting is given 100A,300A,600A,900A,1200A This setting are for 2500A ACB. So what will be the basic allowable setting for the above protection? is there any formulae to calculate this<    0  394
While connecting bulb in Series/Parallel,there is any difference in glowing    3  1638
1. A bomber drops a bomb from an aircraft flying at 2000 km/hr. at an altitude of 7km. The speed at which the bomb will strike the earth would be    0  245
Why generating voltage is limited up to 22kV?    4  2551
which site/city in India has all three(thremal,Hydal and Nuclear)power generaton facilities?    2  1609
Why OLTC(On Load Tap Changing)transformer is not recomended for improving voltage instability?    2  2437
what is the reqirred voltage in HT motor to get full RPM on no load test?    0  389
how to test the turn ratio of 3 phase transformer using volt meter shoe the curcit diagram.    0  597
what is slip rings in an induction motor&what is it's work.    4  2555
How two nos. 130 kw D.C motor get synchronise using D.C drive.    0  330
Why does the Solid state Rectifiers for 3-ph brake motors sometimes have 2 & sometimes 3 output terminals?    0  276
If I want to replace a 26KW Slip ring Motor with a Squirrel Cage motor & Drive (for a Hoist Application). How can I approximate the Motor & Drive HP required in new Setup.    0  445
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Un-Answered Questions
 Question Views   Select
detailed procedure how we calculate cost for pcc m10 and rcc m20 including centering and labour excluding steel/ iron 1291
why ss stablity limit is more transient stablity limit? 272
if you are in a software company,then why do you want to come in a core company like sail, ntpc(where lots of trouble like tension but you have a good life in a it company) ? 345
why do we measure VIBRATION in -24vdc and why we adjust gap voltage -9vdc to 10-vdc? i am trying to get this information since 5 years, yet i haven't get reliable answer, i hope i can get from you. 211
what is ramping rate of generator 330
operation of diesel generator 337
in 1-phase 230v,how in 3-phase 440v. in each phase in between 230v. 708
why current is constant on d.c? 149
what is counter poise conductors 330
How does a digital electronic meter work?????? 362
How will you utilise electrical power? You can start from the generating station. 271
What is the formula to calculate the rating of a three phase miniature circuit breaker 271
who can measure the size of power cable? 297
c++ write a program to use a fuction call "max"which accepts an intger arrey of an arrument and return the larger and smallest of the arrey to main without changing. the original changing of the original position of the element of the arrey. 245
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