Explore topic-wise MCQs in Heat Transfer.

This section includes 4 Mcqs, each offering curated multiple-choice questions to sharpen your Heat Transfer knowledge and support exam preparation. Choose a topic below to get started.

1.

The parameter m = (h P/k A C) 1/2 has been stated to increase in a long fin. If all other parameters are constant, then

A. Profile of temperature will remain the same
B. Along the length temperature drop will be less
C. The parameter influences the heat flow only
D. The temperature drop along the length will be steeper
Answer» E.
Discussion
2.

The value of correction length for equilateral fin is

A. L <sub>C</sub> = 2 L + a/4(3)<sup>1/2</sup>
B. L <sub>C</sub> = L + a/4(3)<sup>1/2</sup>
C. L <sub>C</sub> = 3 L + a/4(3)<sup>1/2</sup>
D. L <sub>C</sub> = 6 L + a/4(3)<sup>1/2</sup>
Answer» C. L <sub>C</sub> = 3 L + a/4(3)<sup>1/2</sup>
Discussion
3.

A fin protrudes from a surface which is held at a temperature higher than that of its environment. The heat transferred away from the fin is

A. Heat escaping from the tip of the fin
B. Heat conducted along the fin length
C. Convective heat transfer from the fin surface
D. Sum of heat conducted along the fin length and that convected from the surface
Answer» D. Sum of heat conducted along the fin length and that convected from the surface
Discussion
4.

In heat dissipation from an infinitely long fin, the boundary conditions are

A. t = t<sub>0</sub> at x = infinity and t = t<sub>a</sub> at x = 0
B. t = t<sub>0</sub> at x = 0 and t = t<sub>a</sub> at x = infinity
C. t = t<sub>0</sub> at x = 0 and t = t<sub>a</sub> at x = 0
D. t = t<sub>0</sub> at x = infinity and t = t<sub>a</sub> at x = infinity
Answer» C. t = t<sub>0</sub> at x = 0 and t = t<sub>a</sub> at x = 0
Discussion