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 Categories >> Engineering >> Electrical Engineering
 
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Question Asked @ Answers Views     Select
How can decide the MVA rating of power transformer for substation like 220/132, 132/66, 66/33kv etc or even higher kv rating of substation???? Send me the strictly technical answer that shows your strong technical aptitude.    6  13178
what is slip what is the use of slip?    0  370
When in a large power system if the demand of power is larger than the generated power the frequency of the power system drops.(assume the rated frequency is 50Hz and now it is 49Hz) So does this mean the demand is totally supplied with a lower value of generated power in a lower frequency?    1  1092
In a generator (Synchronous) does the rotor speed (frequency) corresponds to the speed of the water (in hydro). does the torque on the turbine relate to the flow of water?    2  1350
need of capacitor used in plant    3  1813
Why we use parllel operation of alternator    1  1259
in alternator why on load terminal voltage is less than no load teprminal voltage    1  1134
Why transformer, generator, ups rating kva?    2  2515
DEAR SIR, HOW TO CALCULATE WELDING TRANSFORMER CAPACITY IN KW OR KVA (POWER). TWO WELDING TRANSFORMER USED WHAT TYPE OF DG SET CAPACITY LIKE ( 45 KVA OR 62.5 KVA), PLEASE TELL THE WELDING TRANSFORMER RATEINGS. I AM REFINARY (TANKS WELDING) THANKING YOU    2  4584
How can i check a relay good or not?    2  1619
An 11kv system consisting of an underground cable to a sub station about 300 meters away was shut down for about 10 hrs. On energising, it tripped off on earth fault about 10---20 mins later 6 times but since than it is not tripping.its already 3 weeks now. The SPAJ was found to be fine. what could be the cause.No test had been done to determine the cause of the trippings till now because of demand.    2  1761
what is The difference between national electrical code and I.S.Code (electrical) and what is the value of NEC in electrical engineering field    0  378
In a power system we know that if the generated power is less than the load then the frequency of the system is decreases.So does this mean that total required load is delivered at alower frequency?    1  946
hwat type of motor is used in thermal gas turbine hydro nuclear power plants and why bhel   0  420
how can we convert 48V dc into 12 V dc? Any standard device for it??    2  2011
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Un-Answered Questions
 
 Question Views   Select
 
If breaker is undefined position, first step to do. 278
What are the differences between single phase and three phase? 292
What is the difference between acs 550 & acs 850 1580
What is deference between MCB & MCCB & ISOLATOR 186
technically, what is the reason behind starting the motor star the delta connection .. and what other ways to do this rather than using " star-delta transformer" 470
what is meant by skew width in machines? 505
Sir pl provide 5 year sample paper for post junior engineer(electrical).I have currently applied for junior engineer (electrical) on RRB Ajmer 2040
what is 3rd Harmonics? how it is generated in alternator 4922
Why squirrel cage motor can only use with low starting loads ? 455
how we calculate torque ? how we improve it ?where torque will either motor or generator ? 394
WHAT CAUSED THRESHOLD VOLTAGE TO EXIST? 2223
10rm cable can got load ---- amp? Or Which Size Cable can take the load 100amp capacity SCR; breaker. 428
current transformer cannot measure voltage or not ? then y we use P.T ? 437
what is the id1 & id2 setting in differential protection relay of CSPC? 728
what is destructive and non-destructive testing of welding 45
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