why we use 50 hz frequency in india .. why not 60 hz
Answer Posted / kmr227
Because in India we have 3000 rpm turbines only that's reason why in India frequency is 50hz
we know that f = PN/120=2*3000/120=50hz
But in case of america..... countries they have 3600 rpm tubines so frequency is 60hz based on above formula.
| Is This Answer Correct ? | 10 Yes | 1 No |
Post New Answer View All Answers
in single phase converter, the no.of scr's conducting during overlap a)1 b)2 c)3 d)4
why 5kW motor becomes unbalance if its relay trip 1st time and its set value is 7.0 A
What do you mean by power transformer?
what is the need to express current and voltage in rms value? rms value is also called as effective value,what is effective value?
what is the method of earthing of a transformer using electrodes?
what is subtransient , transient and steady stateac components
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?
Cables Construction hi friends, 0.6/1/1.2 kV LV , DC and Control cables are concentric copper conductor what does its means and what is the use of concentric copper conductor,and are this with copper tape shield or copper screening, ? thanks
why current flow to the opposite direction of flow of electrons???????????
lamination figures
what is meant by twilight switches 7 where its applicable ?
Dear Brother can u tell the proper size selection of cable & the fault level calculation of braker, busbar etc. pls mail me at azeemk30@gmail.com
Why should we hire you over the others waiting to be interview?
State kirchoff current law?
why 1.7Uo for HV cable Hi pot test?IE standard why?