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

This section includes 2 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.

Radiant energy with an intensity of 800 W/m2 strikes a flat plate normally. The absorptivity is thrice the reflectivity and twice the transmissivity. Determine the rate of transmission

A. 155.47 W/m2
B. 145.47 W/m2
C. 135.47 W/m2
D. 125.47 W/m2
Answer» C. 135.47 W/m2
Discussion
2.

A polished metal pipe 5 cm outside diameter and 370 K temperature at the outer surface is exposed to ambient conditions at 295 K temperature. The emissivity of the surface is 0.2 and the convection coefficient of heat transfer is 11.35 W/m2 degree. Calculate the overall coefficient of heat transfer by the combined mode of convection and radiation

A. 11.04 W/m2 degree
B. 12.04 W/m2 degree
C. 13.04 W/m2 degree
D. 14.04 W/m2 degree
Answer» D. 14.04 W/m2 degree
Discussion