Question
A mild steel plate 5 cm thick and initially at 40 degree Celsius temperature is suddenly exposed on one side to a fluid which causes the surface temperature to increase to and remain at 90 degree Celsius. Calculate maximum time that the slab be treated as a semi-infinitely body
For steel, thermal diffusivity = 1.25 * 10¯⁵ m²/s
For steel, thermal diffusivity = 1.25 * 10¯⁵ m²/s
Answer: Option B
Answer: (b).200 seconds
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Answer: (b).200 seconds
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