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categoryهندسة كهربائية schoolبكالوريوس event_available2026-07-13

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5-26 Electric current I = 500 A flows through a stainless steel conductor of diameter D= 5 mm that has an electric resistance R = 5× 10-4 2/m. Energy generated as a result of the passage of the electric current is dissipated by convection into an am- bient at temperature Too 0°C with a heat transfer coefficient h 50 W/(m².°C) The thermal conductivity of the conductor is k 60 W/(m-°C). Calculate the = center and surface temperatures of the cable. = = Note: g= RI² (лD²/4) x (1) W/m³

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