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 Categories >> Engineering >> Electrical Engineering
 
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Question Asked @ Answers Views     Select
can induction motor becomes as a generator. if yes how it is possible. if there is a squirrel cage rotor.    6  1849
the input mechanical power of a single alternator is increased,its RPM increased but in case of an alternator synchronised with grid its RPM does not increased with increase of input mechanical power. why? bhel   3  1868
working principle of induction motor is similar to transformer. but what makes it to rotate? then why the transformer doesnt?    4  2110
1)we have 1000 cfm Blower,Dia-1Mtr,Velocity of air 94 m/s 2)We have Natural Air velocity 94m/s 3If i Put Wind Mill in natural air ,speed is 94m/s Then it will generate Assume 100kw 4)If i put same wind mill across the Blower,air speed is same 94m/s now the Question is Will it generate 100 kw?    0  255
what is die electric strnth of transformer ?    0  154
sir, is there any ratio,this much of A.C volt is equal to D.C voltage    3  930
what is V=4.44FBN, THIS 4.44 ONLY U GOT the voltage in term sof 11, 22 etc this 4.44 u will get from form factor which has a value of 1.11    0  238
any one can explain the stages of a knee point which is taken during ct magnetising curve.    0  137
what happens when power factor leads or lags to electical or home appliances    2  1187
Explain Active power,reactive power,how its related to each other , & inductive ,capacitive.    0  175
WHY IS HV WINDING OF A TRANSFRMER SECTIONALIZED???    3  963
What should be the amps for a MV fuses for transformer 630kVA 20(10)/0.4 kV    0  325
What must the distance between two MV cables be when they are laid on tray?    0  187
One Township having 850 house and each house load is 2.2KW single phase & 5HP 3 Phase motors of 10 Nos .Who can calculate 11 KV transformer capacity .dilip_bhasker@yahoo.co.in    1  828
Why consumers are charged based on Kwh basis why not on Kvah basis. unitech   4  2058
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Un-Answered Questions
 
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What is the current carrying capacity of 0SWG,3SWG,10 & 12 SWG solid bare overhead copper conductors? 720
why effective resistance should be more than static resistance in transmission line? 242
2. A current i=(10+10 sin t)amperes is passed through MI type ammeter. its reading will be......... 139
Explain how you intend to work under pressure to meet up with deadline target? 287
what is the transmission loss for electrical supply? specifically a large shopping complex where the grid is half KM away, what will the % of transmission loss? is there any transmission loss for captive unit generation for above set? thanks 192
In 6600/√3/110/√3v voltage transformer,how much output voltage in open delta transformer,after removing 1-phase of primary side on transformer? 175
how can we select the type of wire.what factors we have to look on it , do we have some formula to calculate it. please guide me on it 157
can anyone explain 11kV 3core cable megger,hi pot test procedure with connection details? 471
how much leakage current is allowed in MC61A L&T make relay? 184
1. What is differential relay? How it operates? 2.How to calculate the Short Circuit Impedance in Transformer? 3.What is the alternate solution for testing of polarity by using polarity tester while its milli ammeter does not works? 4. While testing the 33KV Busbar by using Hipot kit, what should be the test voltage we have to apply? 5. What is the procedure/activities to be taken to inject the current more than 2000A by using 2000A Loading Transformer? 6. Explain how you can give the overload setting to any Motor Protection Relay for a HT motors with formula and example? 7. Why restricted earth fault protection is needed? Why can’t differential Protection is sufficient? 8. What should be the minimum and maximum ohmic value for earthing? 9. Why DC Currents are not used in transformer? 10. What is the Frequency while we step up the voltage from 220V to 11KV? Is it possible? Explain it? 197
WHAT CAUSED THRESHOLD VOLTAGE TO EXIST? 1184
How to calculate no of EARTH PIT? Describe the formula as per IS standard? 208
1. Can a 12v DC choke operate a 60v/12w PL lamp ? 2. Can a 230v ballast fire / operate a 60v/12w PL lamps. 262
what topics we have to concentrate for power grid et.written test.and tell what to read for english synonyms and antonyms. 233
how can i reduce sparking without stepdowning the voltage 219
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