Q.6 A 1 cm diameter, 30 cm long fin made of aluminum (k = 237 W/m°C) is attached to a surface at 80°C. The surface is exposed to ambient air at 22°C with heat transfer coefficient of 11 W/m² C. If the fin can be assumed as infinitely long, its efficiency is A 0.5 0.77 C 0.33 D 0.57

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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Q.6
A 1 cm diameter, 30 cm long fin made of
aluminum (k = 237 W/m°C) is attached to
a surface at 80°C. The surface is exposed
to ambient air at 22°C with heat transfer
2°
coefficient of 11 W/m
C. If the fin can be
assumed as infinitely long, its efficiency is
A 0.5
В
0.77
C 0.33
D 0.57
Transcribed Image Text:Q.6 A 1 cm diameter, 30 cm long fin made of aluminum (k = 237 W/m°C) is attached to a surface at 80°C. The surface is exposed to ambient air at 22°C with heat transfer 2° coefficient of 11 W/m C. If the fin can be assumed as infinitely long, its efficiency is A 0.5 В 0.77 C 0.33 D 0.57
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