WHY WE CAN GENERATE POWER IN 3PHASE MODE ONLY NOT IN 4 OR
5PHASE
Answer Posted / sudhir
for 4 phase system ,phase difference b/w phase 0,90,180,270
deg.at every instant 0deg phase cancil by 180 deg phase,and
90deg phase cancil with 270 deg phase so resultant voltage
at everyinstant wiil 0.
| Is This Answer Correct ? | 0 Yes | 0 No |
Post New Answer View All Answers
what is EIB lighting control system? what is the advantages of this system?
What will be the current drawn by HT motor, if low voltage is applied.. any formula to calculate the LT amps of HT motor.?
IN induction motor pf is increased using capacitors.what will be the effect on motor and system when very large capacitor is accidently installed and pf goes leading.
What is servo motor? what is its purpose?
I am designing new project sub station with 220 kV / 11 kV, 40 MVA capacity. This project have many recifier sets, which can generate 3rd harmonics. Now I have to select vector group of This transformer. To minimise 3rd harmonics, what care should I take in selection of Transformer Vecrtor group? If it is Y-Y with open Delta tertiary then what should be the rating & voltage of Tertiary Winding?
What are the main parts of central chiller plant? Explain the function of each stage.
Why compensation is necessary in feedback control system?
hi plz send me reliance placement papers..i.e electrical technical papers that have been asked in reliance test.
What is the ratio of true power to apparent power in an ac circuit?
In both 600/1000 V cable and 450/750 V cable, we can supply 415 V. However for distribution, all utilities are using only 600/100 V instead of 450/750 V. What is the reason?
generally in LT and MV motors we are using 3.5Coresx16,25,35,50 etc cable for supply.although motors is earthed at two point and having all protection.then why we are using that 1/2 core for earthing the motors.while in HT cable we are using only 3core cable for motor supply.generally lt and mv motors are delta connected and ht motors having star connection.whethere it is having any relation with winding connection( star or delta).all motors i am talking about are dol only.can anybody solve my confusion.thanks...
i applied for c licence with my one year apperents trainee and i have attaced with A grade contractor company experiance that is for 14 monts experiance this document is sufeicant for c licence? pls tell why they rejected
what is the setting of locked rotor in HT motor ? (answer expecting in percentage)
for 4 MVA , 33K.V/6.6K.V transformer. secondary side the connected load is 3000H.P. What is the rating of capacitor bank to be insttaled.
can any one tell me about the Extra low voltage systems?From where we give supply to these type of systems??