Conducting Material
What you’ll learn
Engineers
Higher secondary level
IES Asprirants
Electrical engineers
Requirements
Intermediate level
Description
Electrical conducting material are the basic requirement for electrical engineering products. The electrical conducting material can be classified as below-Based on Resistivity or ConductivityLow resistivity or high conductivity conducting materialHigh resistivity or Low conductivity conducting materialLow Resistivity or High Conductivity Conducting MaterialMaterial having low resistivity or high conductivity are very useful in electrical engineering products. These material used as conductors for all kind of windings required in electrical machines, apparatus and devices. These material are also used as conductor in transmission and distribution of electrical energy.Some of low resistivity or high conductivity materials and their resistivity are given in table below –SilverCopperGoldAluminumHigh Resistivity or Low Conductivity Conducting MaterialMaterials having High resistivity or Low conductivity conducting are very useful for electrical engineering products. These material are used to manufacture the filaments for incandescent lamp, heating elements for electric heaters, space heaters and electric irons etc.Some of materials having High resistivity or Low conductivity are listed below:TungstenCarbonNichrome or Brightray – BNichrome – Vor Brightray – CManganinBased on Area of ApplicationMaterials used as conductor for coils of electrical machinesMaterials for heating elementsMaterials for lamp filamentsMaterial used for transmission lineBimetalsElectrical Contact MaterialsElectrical Carbon MaterialsMaterial for Brushes used in Electrical MachinesMaterials used for fusesMaterials Used as Conductor for Coils of Electrical MachinesMaterials having low resistivity or high conductivity such as copper, silver and aluminum can be used for making coils for electrical machines. However, looking to optimum conductivity, mechanical strength and cost, copper is much suitable for making coils for electrical machines.Materials for Heating ElementsMaterials having high resistivity or low conductivity such as Nichrome, Kanthal, Cupronickel and Platinum etc. are used for making heating elements. Materials used for heating elements must possess following properties-High melting pointFree from oxidation in operating atmosphereHigh tensile strengthSufficient ductility to draw the metal or alloy in the form of wireMaterials for Lamp FilamentsMaterials having high resistivity or low conductivity such as Carbon, Tantalum and Tungsten etc. are used for making incandescent lamp filament. Materials used for making incandescent lamp filament must possess following properties-High melting pointLow vapour pressureFree from oxidation in inert gas (argon, nitrogen etc.) medium at operating temperatureHigh resistivityLow thermal coefficient of expansionLow temperature coefficient of resistanceShould have high young modulus and tensile strengthSufficient ductility so that can be drawn in the form of very thin wireAbility to be converted in the shape of filamentHigh fatigue resistance against thermally induced fluctuating stressesCost should minimumMaterial Used for Transmission LineMaterials used for making conductor for transmission line must possess following properties –High conductivityHigh tensile strengthLight weightHigh resistance to corrosionHigh thermal stabilityLow coefficient of thermal expansionLow cost
Overview
Section 1: Conducting materials part 1
Lecture 1 Conducting materials part 1
Section 2: Conducting materials part 2
Lecture 2 Conducting materials part 2
Section 3: Conducting materials part 3
Lecture 3 Conducting materials part 3
Section 4: Conducting materials part 4
Lecture 4 Conducting materials part 4
Section 5: Dielectric Material
Lecture 5 Dielectric Material
Engineers, Higher secondary students
Course Information:
Udemy | English | 5h 26m | 3.25 GB
Created by: Sm Bakhteyar
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