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 kinds of Transformer oil grade is better for power transformer ?

0 Answers   KSRM Steel Plant,

what is the difference between oil surge relay and buchholz relay.

0 Answers   MPPEB, Suparco,

How can we increase fuel-power ratio of any DG set?

0 Answers  

Damping resistor provided in open delta (tartiary) winding of a measuring PT at the incoming of a MV inverter drive panel is getting heated up. Can any body explain the reasons and suggest the remedy?

0 Answers   Danieli,

What are differences between Voltage, EMF & Potential difference ?

0 Answers  

findout of current?details 440v,3phase,085pf,hp-5

9 Answers  

what is consequences of neutral and earth connect?

0 Answers  

Why the capacitor bank is keeping on for electricity supply and keeping it off for generator supply

3 Answers  

which fault current is maximum: 3 phase short circuit, LG, LL or LLG?? why?? in one of the problems that i have solved, 3 phase short circuit current on an unloaded generator came out to be less than the LG fault current. can anybody please explain why.

2 Answers   Bhel,

What is the use of starter in tube light fitting.how it works.

3 Answers   JSW,

what is TRCC

2 Answers  

What is the difference between Welding Transformer and Normal Transformer?.

2 Answers   DAE,