RCDD TDMM Chapter 1 Questions and Answers Already Passed

RCDD TDMM Chapter 1 Questions and Answers Already Passed The four most common electrical conductors for ICT cable and wire are: - Answers Copper Copper Covered Steel High Strength Copper Alloy Aluminum Silver and Gold are good conductors but not generally used because of cost Name the Conductor: Sets the standard for comparing conductivity of other metals. - Answers Copper Annealed copper sets the reference value of 100%. Other common conductors will have less than 100% of annealed copper's conductivity. Name the Conductor: Also known as copper clad steel, it combines the conductivity of copper with the strength of steel. A copper layer is bonded to a steel core. Typically used for aerial, self-supporting drop wire. - Answers Copper-Covered Name the Conductor: A mixture of copper and other metals such as cadmium-chromium copper and zirconium copper offer important weight reductions and greater strength. Important in aerospace and computer applications. The alloys mentioned above have 85% conductivity rating. - Answers High-Strength Copper Alloy Name the Conductor: Bluish silver-white malleable ductile light trivalent metallic element that has good electrical and thermal conductivity, high reflectivity, and resistance to oxidation. 60% conductivity rating. Lighter than copper and most commonly used in electrical utility distribution lines. - Answers Aluminum This conductor has the following properties: Electrical Conductivity: Sets the standard Ductility: Good Solderability: Good Corrosion Resistance: Good Oxidation Resistance: Good Weight: 14.25 kg/31.4 lbs per 1000 ft Tensile Strength: 250,000 kPa/36,259 psi per 1000 ft - Answers Copper This conductor has the following properties: Electrical Conductivity: Less than copper Ductility: Good Solderability: Good Corrosion Resistance: Good Oxidation Resistance: Good Weight: 13.06kg/28.8lbs per 1000 ft Tensile Strength: 380,000 kPa/55,114 psi per 1000 ft - Answers Copper-Covered This conductor has the following properties: Electrical Conductivity: 85% typical Ductility: Best Solderability: Good Corrosion Resistance: Poor Oxidation Resistance: Good Weight: Tensile Strength: To 550,000 kPa/79,771 psi per 1000 ft - Answers High-Strength Copper Alloy This conductor has the following properties: