Explore topic-wise MCQs in Heat Transfer Questions and Answers.

This section includes 5 Mcqs, each offering curated multiple-choice questions to sharpen your Heat Transfer Questions and Answers knowledge and support exam preparation. Choose a topic below to get started.

1.

The shape factor for complete rectangular furnace is

A. Where a, b and c are the inside dimensions and d x is the wall thickness
B. 2/ d x (a b + b c + c a) + 4 (0.64) (a + b +c) + 8 (0.45) d x
C. 2/ d x (a b + b c + c a) + 4 (0.44) (a + b +c) + 8 (0.35) d x
D. 2/ d x (a b + b c + c a) + 4 (0.34) (a + b +c) + 8 (0.25) d x
E. 2/ d x (a b + b c + c a) + 4 (0.54) (a + b +c) + 8 (0.15) d x
Answer» E. 2/ d x (a b + b c + c a) + 4 (0.54) (a + b +c) + 8 (0.15) d x
Discussion
2.

“All the factors relating to the geometry of the sections are grouped together into a multiple constant called the shape factor”.

A. True
B. False
Answer» C.
Discussion
3.

Consider a system of concentric spheres of radius r 1 and r 2 (r 2 is greater than r 1). If r 1 = 5 cm, determine the radius r 2 if it is desired to have the value of shape factor F 21 equal to 0.6

A. 6.45 cm
B. 7.45 cm
C. 8.45 cm
D. 9.45 cm
Answer» B. 7.45 cm
Discussion
4.

Establish a relation for shape factor for a conical cavity with respect to itself of depth h and diameter d. The cavity is closed on its outer surface with a flat plate

A. 1 – d/ (4 h 2 + d) 1/2
B. 1 – d/ (4 h 2 + d 2) 1/2
C. 1 – d/ (4 h + d 2) 1/2
D. 1 – d/ (h 2 + d 2) 1/2
Answer» C. 1 – d/ (4 h + d 2) 1/2
Discussion
5.

Establish a relation for the shape factor of cylindrical cavity with respect to itself of depth h and diameter d. The cavity is closed on its outer surface with a flat plate

A. 4 h/4 h + d
B. 4 h + d/h
C. 4 h + d/4 h
D. h/4 h + d
Answer» B. 4 h + d/h
Discussion