a. to decrease rate of heat transfer

b. to increase rate of heat transfer

c. to maintain rate of heat transfer at a constant rate

d. cannot say

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**ANSWER: b. to increase rate of heat transfer **

a. maximum

b. minimum

c. similar to the heat generation temperature

d. unpredictable

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**ANSWER: b. minimum **

a. sum of rate of heat transfer by convection out of the element (x+dx) and heat transfer by convection from the surface between x to (x+dx)

b. sum of rate of heat transfer by conduction out of the element (x+dx) and heat transfer by conduction from the surface between x to (x+dx)

c. sum of rate of heat transfer by conduction out of the element (x+dx) and heat transfer by convection from the surface between x to (x+dx)

d. none of the above

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**ANSWER: c. sum of rate of heat transfer by conduction out of the element (x+dx) and heat transfer by convection from the surface between x to (x+dx) **

a. the same constant temperature

b. different temperatures

c. maximum base temperature

d. minimum temperature

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**ANSWER: b. different temperatures **

Consider that the fin is infinitely long

a. 80.67

b. 100

c. 85.67

d. 185.67

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**ANSWER: d. 185.67 ^{0}C **

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