Apin fin of uniform, cross-sectional area is fabricated of an aluminum alloy (k 160 w/m k). the fin diameter is d 4 mm, and the fin is exposed to convective conditions characterized by h 220 w/m2 k. it is reported that the fin efficiency is f 0.65. determine the fin length l and the fin effectiveness f . account for tip convection.

answer:

the answer is d

explanation:

the equation above shows how temperature f, measured in degrees fahrenheit, relates to a temperature c, measured in degrees celsius. based on the equation, which of the following must be true?

a temperature increase of 1 degree fahrenheit is equivalent to a temperature increase of

5

9

degree celsius.

a temperature increase of 1 degree celsius is equivalent to a temperature increase of 1.8 degrees fahrenheit.

a temperature increase of

5

9

degree fahrenheit is equivalent to a temperature increase of 1 degree celsius.

a) i only

b) ii only

c) iii only

d) i and ii only

answer:

the answer is d

explanation: