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Electrodes used in spot welding are made up of which material?(a) Only Copper(b) Copper and tungsten(c) Copper and chromium(d) Copper and aluminium |
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Answer» Correct option is (d) Copper and aluminium To elaborate: The electrodes that are employed in the spot welding are required to possess a high amount of electrical and thermal conductivity. Hence, they are primarily made up of copper or copper and tungsten or copper and chromium. |
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