The modern transformer is a sophisticated piece of electriccal equipment. it consists of a large number of components varying with transformer type, application and capacity
-In previous volumes of this series, you studied what electricity is, how it is put to practical use in electrical circuits, and how it is measured.
-The electric motor is a machine that can transform electricity into rotary motion to perform useful work.
-The guided missile is, for the moment, the most recent extension of a series of weapons designed to permit man, with destructive intent, to hit a target, while remaining at a relatively safe distance.
from time immemorial mankind has been using the energy of burning fuels the wind and falling water