transformer?

Question

what is center taping of the TRANSFORMER?
plz solve the following problem.............
a 50 hz single phase transformerhas one primary winding and two secondary .the primary is rated as 22V and secondaries as 220V with a central taping and 600 V without any taping .for a net core area of 75 cm2.calculate the no. of turns of the three winding. max value of flux density is 1.2T ..

Answer 1

center tap is a connection to the middle of the winding,
you get half the voltage

Answer 2

You need to figure the turns ratio between the primary and secondary coils. The turns per volt rating is going to be about 5 turns of wire for every volt for either primary or secondary windings. The core mass is primarily of concern for 50 Hz, or 60 Hz frequency of the energizing voltage. The core material, and it's geometry is going to play a major role in hysteresis loss and eddy currents. This is one reason that silicon steel was used in older transformers, as well as laminating the core material, with an air gap to stop circulating currents, or at least minimize them. Newer powered iron cores are making things easier, as well as making the flux some what tighter to increase transformer efficiency.

Answer 3

pay attention in class