An ideal transformer is a useful approximation of a very tightly coupled transformer in which the coefficient of coupling is almost unity and both the primary and secondary inductive reactance are extremely large in comparison with the terminating impedance
The nucleus is the biggest and most important organelle of the cell. The presence of the nucleus is the principal feature that distinguishes eukaryotic from prokaryotic cells Almost eukaryotic cells have the nucleus except mature red blood cells of mammals and sieve cells of high plants etc.. By housing the cell's genome, the nucleus serves both as the repository of genetic information and as the control
