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.

In case when both the surfaces of plane wall are at different temperature, we get an expression i.e.
T MAX T W2 /T W1 TW2 = (B + 1)2/4B

A. nWhat is the value of B?
B. (q <sub>g</sub>) ( )<sup>2</sup>/2k (T <sub>W1 </sub> T<sub>W2</sub>)
C. (q <sub>g</sub>) ( )<sup>3</sup>/3k (T <sub>W1 </sub> T<sub>W2</sub>)
D. (q <sub>g</sub>) ( )<sup>4</sup>/4k (T <sub>W1 </sub> T<sub>W2</sub>)
E. (q <sub>g</sub>) ( )<sup>5</sup>/5k (T <sub>W1 </sub> T<sub>W2</sub>)
Answer» B. (q <sub>g</sub>) ( )<sup>2</sup>/2k (T <sub>W1 </sub> T<sub>W2</sub>)
Discussion
2.

Suppose heat is conducted due to electrons
Where, i = I/A and p is the resistivity, then

A. q <sub>g</sub> = 2i<sup>2</sup> p
B. q <sub>g</sub> = 3i<sup>2</sup> p
C. q <sub>g</sub> = i<sup>2</sup> p
D. q <sub>g</sub> = 4i<sup>2</sup> p
Answer» D. q <sub>g</sub> = 4i<sup>2</sup> p
Discussion
3.

Consider a slab of thickness with one side (x = 0) insulated and other side (x = ) maintained at constant temperature. The rate of uniform heat generation within the slab is q g W/m3. Presuming that the heat conduction is in steady state and one dimensional along x direction, the maximum temperature in the slab would occur at x equal

A. /2
B. Zero
C. /4
D.
Answer» C. /4
Discussion
4.

If Q X is heat generated in at distance x , then heat conducted out at a distance (x + d x) will be

A. Q <sub>X </sub>+ 3d (Q <sub>X</sub>) d x /d x
B. 2Q <sub>X </sub>+ d (Q <sub>X</sub>) d x /d x
C. d (Q <sub>X</sub>) d x /d x
D. Q <sub>X </sub>+ d (Q <sub>X</sub>) d x /d x
Answer» E.
Discussion