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Q5 A) A power transistor has a temperature on its face exposed to environment of 80 °C, its thickness is 10 mm. Its radius is 2 cm. The convection heat transfer coefficient is 200 W/m2.K, its thermal conductivity is 200 W/m K. How much heat could be dissipated by the power transistor assume the environmental temperature is 20 °C.

Q5 A) A power transistor has a temperature on its face exposed to environment of 80 °C, its thickness is 10 mm. Its radius is 2 cm. The convection heat transfer coefficient is 200 W/m2.K, its thermal conductivity is 200 W/m K. How much heat could be dissipated by the power transistor assume the environmental temperature is 20 °C.

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
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Q5 A) A power transistor has a temperature on its face exposed to environment of 80 °C, its thickness is 10 mm. Its radius is 2 cm. The convection heat transfer coefficient is 200 W/m2.K, its thermal conductivity is 200 W/m K. How much heat could be dissipated by the power transistor assume the environmental temperature is 20 °C. Q5 B) An instantaneous laser pulse of 7.5 MJ/m2 is imposed on a slab of Aluminum initially at uniform temperature of 40 °C. Calculate the temperature at the surface after 2s.
Transcribed Image Text:Q5 A) A power transistor has a temperature on its face exposed to environment of 80 °C, its thickness is 10 mm. Its radius is 2 cm. The convection heat transfer coefficient is 200 W/m2.K, its thermal conductivity is 200 W/m K. How much heat could be dissipated by the power transistor assume the environmental temperature is 20 °C. Q5 B) An instantaneous laser pulse of 7.5 MJ/m2 is imposed on a slab of Aluminum initially at uniform temperature of 40 °C. Calculate the temperature at the surface after 2s.
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