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

This section includes 3 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.

A steel rod (k = 30 W/m degree) 1 cm in diameter and 5 cm long protrudes from a wall which is maintained at 10 degree Celsius. The rod is insulated at its tip and is exposed to an environment with h = 50 W/m2 degree and t a = 30 degree Celsius. Calculate the rate of heat dissipation

A. 2.658 W
B. 3.658 W
C. 4.658 W
D. 5.658 W
Answer» C. 4.658 W
Discussion
2.

A steel rod (k = 30 W/m degree) 1 cm in diameter and 5 cm long protrudes from a wall which is maintained at 10 degree Celsius. The rod is insulated at its tip and is exposed to an environment with h = 50 W/m2 degree and t a = 30 degree Celsius. Calculate the fin efficiency

A. 56.57%
B. 66.57%
C. 76.57%
D. 86.57%
Answer» C. 76.57%
Discussion
3.

A very long copper rod 20 mm in diameter extends horizontally from a plane heated wall maintained at 100 degree Celsius. The surface of the rod is exposed to an air environment at 20 degree Celsius with convective heat transfer coefficient of 8.5 W/m2 degree. Workout the heat loss if the thermal conductivity of copper is 400 W/m degree

A. 10.71 W
B. 20.71 W
C. 30.71 W
D. 40.71 W
Answer» C. 30.71 W
Discussion