Why the size of transformer decreases if we increases the
frequency?
Answer Posted / www.pooneetkashyap.blogspot.co
from emf equation of X'mer
E=4.44fNAB (http://en.wikipedia.org/wiki/Transformer)
where E=voltage
f=frequency
A=Area
N=number of turns
B=magnetic flux density
in general we can say
A=E/(4.44fNB)
for constant value of E,N,B
if we increase F,then Area of core will decreases means size
of transformer will reduce.
| Is This Answer Correct ? | 123 Yes | 9 No |
Post New Answer View All Answers
working principle a.v.r. ?
What is the function of probe in cro?
Dear friends, i would like to know that what is the exact function of 'exciter winding' & 'aux winding' in Alternator?
State the formula for overall efficiency of thermal power station
What is excitation in case of dc motor?
what are the application of over current relay?
Anybody know how schematic diagram for reverse power relay? RPR for generator protection
define reflection method?
Difference between drift current and diffusion current?
WHaT IS THE CONCEPT OF INDUCTION LAMPS IN MODERN LIGHTINGS, and HOW IT WORKS TO EMIT LIGHT ( AS NO ELECTRODES ARE PRESENT ) ?" COULD INDUCTION LAMPS CAUSE INTERFERENCE WITH COMUNICATIONS INTO A STORE USING INDUCTION LIGHTING ? WHAT IS THE BENEFIT OF USING THE LOW FREQENCY INDUCTION LAMP , VERSUS LED , AND VERSUS FLUORESCENT, AND VERSUS ANOTHER KIND OF LIGHTING . THANK yOU MOISES GUINDI
A Question Like A Wire Is Wound Whose Resistance Is Some 132. 44647 Ohms. If A Voltage Of 30 mv, 296 Ma Current Is Applied To It What Is The Resistance.
If we have use two power cable for incomer, that time how many use cbct for earth leakage protection? 1 or 2 if 1 way? If 2 way?
i want bhel placement paper for electrical if anybody having pl send to my id kavitha867@myway.com immediately
I have a small system with two motors that are running on 380 vac, 60 hz. These motors are expensive and I usally get them from Brazil. I am adding another motor to the system, but I want to purchase a 480 vac, 60 hz motor to use. It will be on a VFD that is rated fro 380 thru 480. Is this posible and will I have to use a larger motor and derate it?
Compare jfet’s and mosfet’s.