The transformer which is smallest in size is and how to
calculate that? The options are
100 KVA, 50 Hz
100 KVa, 100 Hz
100 KVA, 25 Hz
50KVA, 25 HZ
Answers were Sorted based on User's Feedback
The transformer equation
E = 4.44(f)(B)(N)(a) where E is the voltage in the winding
either primary or secondary, f is the frequency, B is the
flux density in the core, N are the number of turns on the
winding, and a is the cross area of the core. At higher
frequencies the number of winding turns N is reduced. This
formula follows from the Faraday formula, E = N dθ/dt and θ
= B(a).
This formula is why switching power supplies use a much
higher frequency (thousands of hertz) than 60 hertz, they
use smaller transformers that don't need as much wire as
transformers operating at 60 hertz. See Wikipedia for the
transformer website:
http://en.wikipedia.org/wiki/Transformer
Source(s):
Wikipedia for the transformer equation
100 kva 100 hz
| Is This Answer Correct ? | 9 Yes | 1 No |
Why more sound is produced in mixer than grinder
What is principal to reduce earth leakage current with isolation transformer? When isolation transformer is installed in input stage of system, earth leakage current is reduced. the reason is why the leakage current of 2nd stage of isolation transformer does not affect the 1st stage's leakage current. I would like to know the reason. As you know, earth leakage current is a kind of AC. So, How to reduce earth leakage current in case that isolation transformer is used?
why 120 devided with pole and speed multiplication to determine frequency
what is the design voltage for 6.6KV 2000 KVAR HT capacitor?
What do you mean by distributed winding in alternators? how exactly is 3 phase power generated?
can anyone explain 11kV 3core cable megger,hi pot test procedure with connection details?
why are laminations used in constructing the field core?
Which type of gas used in cylinder (VCB)?????
how can you prove that in CE configuration a transistor has 180 degree phase shifted output
1) What are your personal strength? 2) What are your personal areas of improvement? 3) What are your expectations from from a particular job? 4) what are your carrier objectives?
For single phase(phase to neutral) having potential difference 230.in three phase(phase to phase)we have 440V HOW...?
Im designing APFCR Panel for 600 KVAR.I need to calculate the full current so that i can choose the capacity of isolator/Breaker.Kindly suggest with formula.
Civil Engineering (5086)
Mechanical Engineering (4456)
Electrical Engineering (16639)
Electronics Communications (3918)
Chemical Engineering (1095)
Aeronautical Engineering (239)
Bio Engineering (96)
Metallurgy (361)
Industrial Engineering (259)
Instrumentation (3014)
Automobile Engineering (332)
Mechatronics Engineering (97)
Marine Engineering (124)
Power Plant Engineering (172)
Textile Engineering (575)
Production Engineering (25)
Satellite Systems Engineering (106)
Engineering AllOther (1379)