Explore topic-wise MCQs in Heat Transfer.

This section includes 3 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.

Consider the above problem, also calculate the temperature at the inside surfaces of the sphere

A. 138.3 degree Celsius
B. 327.8 degree Celsius
C. 254.7 degree Celsius
D. 984.9 degree Celsius
Answer» C. 254.7 degree Celsius
Discussion
2.

A hollow sphere (k = 30 W/m K) of inner radius 6 cm and outside radius 8 cm has a heat generation rate of 4000000 W/m3. The inside surface is insulated and heat is removed by convection over the outside surface by a fluid at 100 degree Celsius with surface conductance 300 W/m2 K. Make calculations for the temperature at the outside surfaces of the sphere

A. 105.6 degree Celsius
B. 205.6 degree Celsius
C. 305.6 degree Celsius
D. 405.6 degree Celsius
Answer» D. 405.6 degree Celsius
Discussion
3.

Identify the correct boundary condition for a hollow sphere with inside surface insulated

A. At r = r <sub>1</sub>, the conduction region is perfectly insulated
B. At r = r <sub>1</sub>, the conduction region is partially insulated
C. Heat flow is infinity
D. Heat flow is negative
Answer» B. At r = r <sub>1</sub>, the conduction region is partially insulated
Discussion