My Report

Heat Transfer Mock Test 1


Correct Answer: 2 points | Wrong: -1 point
Grades: A* (100% score) | A (80%-99%) | B (60%-80%) | C (40%-60%) | D (0%-40%)
advertisement
 10%

Question 1 of 10

1. Heat transfer takes place in liquids and gases is essentially due to

Question 1 of 10

Question 2 of 10

2. Heat transfer takes place according to which law?

Question 2 of 10

Question 3 of 10

3. The diffusion equations
Ɏ2t + q g = (1/α) (d t/d r)
Governs the temperature distribution under unsteady heat flow through a homogeneous and isotropic material. The Fourier equation follows from this expression when

Question 3 of 10

Question 4 of 10

4. Heat conduction in gases is due to

Question 4 of 10

Question 5 of 10

5. The relation Ϫ2 t =0 is referred to as

Question 5 of 10

Question 6 of 10

6. The following data pertains to a hollow cylinder and a hollow sphere made of same material and having the same temperature drop over the wall thickness
Inside radius = 0.1 m and outside surface area = 1 square meter
If the outside radius for both the geometrics is same, calculate the ratio of heat flow in the cylinder to that of sphere?

Question 6 of 10

Question 7 of 10

7. During a cold winter season, a person prefers to sit near a fire. Which of the following modes of heat transfer provides him the maximum heat?

Question 7 of 10

Question 8 of 10

8. Thermal conductivity is maximum for which substance

Question 8 of 10

Question 9 of 10

9. The interior of an oven is maintained at a temperature of 850 degree Celsius by means of a suitable control apparatus. The oven walls are 500 mm thick and are fabricated from a material of thermal conductivity 0.3 W/m degree. For an outside wall temperature of 250 degree Celsius, workout the resistance to heat flow

Question 9 of 10

Question 10 of 10

10. Which of the following is the unit of thermal resistance?

Question 10 of 10


 

Manish Bhojasia - Founder & CTO at Sanfoundry
Manish Bhojasia, a technology veteran with 20+ years @ Cisco & Wipro, is Founder and CTO at Sanfoundry. He lives in Bangalore, and focuses on development of Linux Kernel, SAN Technologies, Advanced C, Data Structures & Alogrithms. Stay connected with him at LinkedIn.

Subscribe to his free Masterclasses at Youtube & discussions at Telegram SanfoundryClasses.