Interested to Buy Any Domain ? << Click Here >> for more details...
WHY THE FREQUENCY IS 50 HZ IN INDIA.CAN WE USE SOME OTHER
FREQUENCY.IF SO WHAT IS THE RANGE AND WHAT WILL BE THE
EFFECT IN PRESENT POWER SYSTEM IF WE CHANGE THE FREQUENCY
AS YOU SUGGEST ?
- 32 Answers
- 59639 Views
- L&T, MCL, I also Faced
- E-Mail Answers
Answer Posted / uk
there are many reason behind the use of 5o hz ...
1. in india all power plant set on the basis of given formula.
F = (P * N) / 120
where F = Frequency (in Hz)
P = the number of poles of the generator rotor
N = Speed of generator rotor (in RPM)
F*120=p*N should be equal to 6000.
if the we change the frequency the we have to change the 6000 factor which is uneconomical
2. core is combination of hysteresis loss and eddy current loss
hysteresis loss is directly proportional to the frequency and the eddy loss is directly proportional to square of the frequency. therefore as we increase the frequencies these loss also increase...
3. skin effect is depend on the frequency as we increase the frequency the skin effect is increases in the transmission line and the line become more resistive and copper loss is increase..
4. the using of ferromagnetic substance works efficiently on the frequency in between 44 hz to 70hz and the we go beyond the 70hz the life of the substance is decreases....
| Is This Answer Correct ? | 5 Yes | 1 No |
Post New Answer View All Answers
please send me latest & previous years question papers for IOCL Technical level questions
All the socket in a room become very hot, the Wall was also became very hot and the earth conductor also became live, what in your view might be the possible causes?
Which do you think is the most significant cause of energy loss in a factory?
how 650 volts creates? where is use?
How time response of the system is divided?
what is physical distance of isolator to VCB in 33/11kv sub stations
A commercial Building is designed with 14th floor levels with indoor substation of three phase transformer with rated capacity of 1000 Kva.The transformer delivered 65% of its rated capacity at 0.67 power factor lagging.Because of low power factor, the power customer was penalized and certain cost was charged accordingly based on every point percentage lower than 85%.This situation may repeatedly happen on the succeding energy bills of power customer.The power customer is desired to improve its historical power factor of 0.67 lagging and no further penalty be impose by the local power company on the next bill. Q: Identify the appropriate solution you want to offer to Client?.Justify SCIENTIFICALLY and MATHEMATICALLY the principles behind the solution.
What is bode plot?
what is the formula for hv test for cable and circuit breaker..????
what are carbondioxide and dcp used in fire extinguishers
I want to replace the 3 KW DC motor with AC motor so what should be the rating of AC motor? Details Of DC motor to be changed with AC are - Kw - 3, Vf - 310, If - 0.15, Va - 400, Ia - 13, RPM - 2400
is there any phase difference occurs while primary and secondary side mutual induction occurs?
what is the minimum voltage require to injure our body?
what is the purpose of high speed earth switch in gas insulated substat
standard earthing rating for power line..
