In electrical engineering meterials may be divided into four broad groups according to the purposes they serve. These four groups are
a. conductors
b. semi-conductors
c. magnetic meterials
d. electrical insulating meterials
conductors
conductors posses high conductivity and are used in electrical engineering to provide paths for electric current in all types of electric machine winding , electrical apparatus , devices , instruments . conductors are required for the
manufacturing of cables and wires by means of which electrical energy is tansmitted over long distances and then distributedto the consumers.
semi conductors
semiconductors occupy an intermediate position between conductors and insulators. The properties of semiconductors make them valuable in many branches of electrical engineering such as telecommunication and radio communication ,electronics in general and power engineering . semiconductors serve as rectifiers, amplifiers , special sources of electric current, photocells etc.
magnetic meterials
The meterials that strengthen the magnetic field in which they are placed and possess high magnetic permeability . These properties make them suitable for use as magnetic cores and circuits , magnetic screens and permanent magnets enabling setting up a magnetic field in the surrounding space.
Insulating meterials
The great difference between the conductivity of dielectrics and conductors
a. conductors
b. semi-conductors
c. magnetic meterials
d. electrical insulating meterials
conductors
conductors posses high conductivity and are used in electrical engineering to provide paths for electric current in all types of electric machine winding , electrical apparatus , devices , instruments . conductors are required for the
manufacturing of cables and wires by means of which electrical energy is tansmitted over long distances and then distributedto the consumers.
semi conductors
semiconductors occupy an intermediate position between conductors and insulators. The properties of semiconductors make them valuable in many branches of electrical engineering such as telecommunication and radio communication ,electronics in general and power engineering . semiconductors serve as rectifiers, amplifiers , special sources of electric current, photocells etc.
magnetic meterials
The meterials that strengthen the magnetic field in which they are placed and possess high magnetic permeability . These properties make them suitable for use as magnetic cores and circuits , magnetic screens and permanent magnets enabling setting up a magnetic field in the surrounding space.
Insulating meterials
The great difference between the conductivity of dielectrics and conductors
