Answer / 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.

Answer / satish kumar(satty)

EMF of a transformer increases with frequency. As a result the transformer can be physically more compact because a given core is able to transfer more power without reaching saturation and fewer turns are required to achieve the same impedance.

Answer / jaipal rathod

from transeformer eqn size of the transeformer is inversely proportional to the supply freqency...

e=4.44 f BA N

flux=B*A

SO,A=1/F
When freq increase,size or area of the t/f is decreased

Answer / chandan kumar

E=4.44bafn V
so if we increase the supply frequency the induced emf
increases
and the active power of transformer is given by P=VI,
SO POWER DEVELOPED IS INCREASES of the same t/f
if we increase the frequency
therefor the size is decreases

Answer / sandip

IN TRANSFORMER FREQUENCY NEVER CHANGE.

What is an Antipumping relay ?

4 Answers  

what is the difference between CVT & PT?

2 Answers  

how does calculate loss correction factor in transformer

1 Answers  

What is knee point voltage of transformer?

0 Answers   Nabard,

Hi, My question is our total motor load is 55 kw.so what cable size required for main supply. Please reply

1 Answers   Maryam Enterprises,

What is the loss of transformer of 220kv/11kv, 63/80 MVA and 18.05% impedance

0 Answers  

HRC fuse provide best protection against

3 Answers  

HOW DG WORKS ?

3 Answers  

EXPLAIN WORKING PRINCIPLE OF ALTERNATOR & MOTORS.

2 Answers   L&T,

please write motor, transformer, Generator setting, fault level calculation of Tr.etc

0 Answers  

When should I use earth leakage circuit breaker for incomer and when should I use it for each feeder seperately?

1 Answers  

Control wiring of a dol starter for forward and backward

0 Answers   Basj Industries,