Telecommunication Wiring 5. Optical Cables Cable Tray Materials: • Most cable tray systems are fabricated from a corrosion-resistant metal (low-carbon steel‚ stainless steel or an aluminum alloy) or from a metal with a corrosion-resistant finish (zinc or epoxy). • The choice of material for any particular installation depends on the installation environment (corrosion and electrical considerations) and cost. Aluminum • Cable trays fabricated of extruded aluminum are often used for their high
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Production and Properties of Metals Mr J E Chuter‚ Cert Ed 2012 En No 20100292 Introduction I have decided to produce a project based on the production and properties of metals‚ as although I have worked as a welder for over 30 years‚ and a welding teacher for the last 2 years on apart-time basis‚ I felt I didn’t know enough information on the material that I work on‚ on a daily
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the ‘Voltaic Pile’. The “Pile” consisted of discs of copper and zinc‚ stacked alternatively. In 1800‚ after going through extensive experimentation‚ Volta developed the voltaic pile. The original voltaic pile consisted of a pile of zinc and silver discs. The discs were separated by pieces of paper or cardboard and they were in between the alternating discs. The dividers were soaked in salt water. A copper wire connected the bottom zinc disc to the top silver disc could create frequent sparks. The top
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analyze bromide‚ chloride‚ nitrate‚ carbonate and sulfate radicals Lab 4: Qualitative analysis of Basic Radicals present in drugs and dosage form Part 1: Examples of Drugs and dosage forms having basic radicals Part 2: How to analyze aluminium‚ iron‚ zinc‚ potassium‚ calcium‚ sodium radical Lab 1 Principle of identification of Inorganic drugs‚ compound‚ ions which is already identified but unknown to the student Principle What are the components of the principle of an experiment? Explanation
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considered to be one of the largest sources of heavy metals. Zinc‚ copper‚ and lead are three of the most common heavy metals released from road travel‚ accounting for at least 90 of the total metals in road runoff. Lead concentrations‚ however‚ consistently have been decreasing since leaded gasoline was discontinued. Smaller amounts of many other metals‚ such as nickel and cadmium‚ are also found in road runoff and exhaust. About half of the zinc and copper contribution to the environment from urbanization
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Investigatory Project In Science & Technology IV (Potato Battery) Submitted by : Eloisa Umali Chelsea Jayne D. Diaz Pia Angela Valencia Acknowledgement The researchers would like to acknowledge with sincerest gratitude the following persons for the support they gave to them in the accomplishment of this investigatory project. Mrs. Rosie Castillo‚ who guide us and helped us in making this project. Who gave us the opportunity
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Wash hands for safety. 3. Take the clock module and place fruit in the two holders. 4. Remove plastic coatings at the end of all wires with scissors. 5. Take the black cable and tie one end to the Zinc metal contact. 6. Take the blue cable and tie one end to the Zinc metal contact and the other end of the Copper metal contact. 7. Take the red cable and tie one end to the Copper metal contact. 8. Insert the metal contacts to the fruit. 9. Attach the black and red
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Voltage of electrochemical cell CONTROLLED VARIABLE: Temperature of surrounding (room temperature)‚ Temperature of solutions‚ Volume of solutions (100mL)‚ Concentration of ZnSo4 (0.1 mol)‚ Concentration KNO3 (1 mol)‚ Type of filterpaper‚ Mass of zinc and copper electrode APPARATUS • Digital Voltmeter • 2 beakers 100mL • 2 Conductivity Cups • Filterpaper • Wires 2x • Crocodile clips 2x • 100mL of 0.1 mol ZnSo4 Solution • 100mL of CuSo4 Solution with the following concentrations
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lemon battery is a simple type of electrical battery that is commonly made for school science projects because it illustrates a battery’s main components. Typically‚ a piece of zinc metal and a piece of copper metal are inserted into a lemon. Everyday objects such as galvanized nails and copper pennies can be used for the zinc and for the copper. A single lemon is usually studied using an electrical meter. Several lemons can be wired together to form a more powerful battery that will power a light-emitting
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CORROSION Corrosion is defined as the involuntary destruction of substances such as metals and mineral building material by surrounding media‚ which are usually liquid (i.e. corrosive agents)." Most metals corrode. During corrosion‚ they change into metallic ions. In some cases‚ the product of corrosion itself forms a protective coating. "For example‚ aluminium forms a thin protective oxide layer which is impervious to air and water. In other cases (e.g. iron)‚ however‚ the coating either flakes
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