Interested to Buy Any Domain ? << Click Here >> for more details...
Ns=120f/p. what is 120?
- 10 Answers
- 107186 Views
- IAR, L&T, Ramada, Toshiba, I also Faced
- E-Mail Answers
Answer Posted / subhasish(rimo) sengupta
f=1/T. when,T = time period for one full cycle.
in T seconds, 1 revolution is completed.
So, in 1 second,1/T revolutions or f full waves is formed.
If there are P no. of poles,then P/2 no. of full waves will be formed in one full revolution of the field.
Now, if n=rotation of the field in 1 second,
then f=(P/2)*n
or,n=2f/p.
So, N=(60*2*f)/P , (when N= rotation per min.)
or, N=120f/P.
| Is This Answer Correct ? | 104 Yes | 3 No |
Post New Answer View All Answers
What is the exact formula for one weber of magnetic flux?
I'm generating a pulse of 3V with frequency 80Hz (12.5ms time period) and pulse duration 0.125ms and feeding it to a transformer since i want the pulse to get amplified around 60V. At the output amplification s happening but the pulse is changed to a spike, can you tell me what could be the reason? (an ordinary transformer 220V-12V stepdown transformer is reverse connected ie. now it is 12V-220V stepup and voltage amplification happens)
how to calculate
What types of high speed CMOS circuits have you designed?
what is the best transformer oil breakdown voltage?
What are the temperature elements?
what is Different between Bilinear and Unilenier?
Hello to all, Please someone can send me HPCL ELECTRICAL Engg. Sample papers to me? Its urjent....my email address is.... raviasiapacific@gmail.com
Actually I have a doubt on neutral and earth.we use Ac power without taking neutral by connecting to earth,but at that time does it affects on efficiency of any electrical components or no? If yes how?
How does PLC work for sychronising of Two or more DG sets?
what is the safe meggar values for motor, transformer HT, LT and Cables? IF we want to replace I/C bay at our 220 kv substation which is of 140 mw load capacity bay to be replaced by 400 mw capacity bay.other than CT(1200/1) what are the other equipment i have to replace. why we generally use 3.5 core cable or in other word 1/2 core for neutral and also confirm me that in balance conditiob(3 phase)current in neutral will zero
Why using synchronising methed in DG's sets?
how to changeover ups in this power failur time?
What is power distribution criteria for converting single phase unbalanced residential load to 3 phase star connected balance system. Does total KW converted to 3 Phase. Means Divided by root 3.
can i use 4 number of circuit breaker as single phase manual change over switch? if yes then how plz also send ckt diagram at nazimzamurad@gmail.com
