Physics
Physics, 24.06.2019 19:10, dinosaur10

An array of power transistors, dissipating 6 w of power each, are to be cooled by mounting them on a 25cm ×25cm-square aluminum plate and blowing air at 35°c over the plate with a fan at a velocity of 4 m/s. the average temperature of the plate is not to exceed 65°c. assuming the heat transfer from the back side of the plate to be negligible and disregarding radiation, determine the number of transistors that can be placed on this plate.

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An array of power transistors, dissipating 6 w of power each, are to be cooled by mounting them on a...

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