engineering recuitment AAI JE Technical Mock Test 2020-21 Heat Transfer Fins Short Fin

A 3 cm long, 2 mm × 2 mm rectangular cross-section aluminium fin [k = 237 W/m°c] is attached to a surface. If the fin efficiency is 65%, the effectiveness of this single fin is:

1
30
2
24
3
8
4
39
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