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
How will polarity test of Dy5 Transformer ?
11 kv input, 66 kv input advantages
how can service sitting be setted for MCCB?Example for sittings IR (CURRENT RATING),IS(CURRENT STARTING) I O (current operating)?
What is the working principle of servo motor? And explain it.
how we can find of current direction(supply comming/out going direction) when a transmission line passing through sides.
Following test should be conducted to find out relative polarity of transformenr terminals A no load test B back to back test C phasing out test D none of above
can anyone explain the star-delta motor control wiring ,which wire go where and how they operate?
how to calculate IR value of 33KV cable ??
how copper and aluminium wires or cables are choose for current rating? please provide copper and aluminium wire selection chart for different current rating ?
What is the automatic voltage regulator with servomotor?
by what factor the starting current is used when comparing star and delta connection for motor starting?
what is EIB lighting control system? what is the advantages of this system?
What is an ac motor?
what is dc mator?types of dc motor?losses in dc motor?what is the mechanical,electrical and commercial efficiency of a dc motor?
Is there any Electrical supervisor license which gives permit to work whole India rather than individual state??