Question Bank: Important Long Questions

Chapter 12

BOILERS

I. Answer the following:

1. Enumerate the various types of boilers.

2. What are the requisites of a boiler?

3. Explain, with a neat sketch, the working of a Cochran boiler.

4. Sketch and describe the working principle of a locomotive boiler.

5. Describe the working principle of Lamont Boiler with neat sketch.

6. Explain the constructional features and functioning of a Lancashire boiler.

7. Give an outline sketch showing the arrangement of water tubes and furnace of a Babcock and Wilcox boiler. Indicate on it the path of the flue gases and water circulation. Show the positions of super heater, fusible plug and blow-off cock. Mention the function of each

8. Explain, with the help of a diagram, the construction and working of a fire tube boiler.

 9. Distinguish between fire tube boilers and water tube boilers

10. Name the important boiler mountings and briefly explain their functions.

11. Describe, with a neat sketch, a water level indicator. Explain how the flow of steam and water is automatically stopped when the glass tube breaks.

12. Explain how the Bourdon type pressure gauge works.

13. Explain why safety valves are needed in a boiler. Draw a neat sketch of a spring loaded safety valve and explain its working.

14. What is the purpose of a fusible plug? Explain.

15. Define a High Pressure Boiler. Mention the advantages of high pressure boilers.

16. Explain the working principle of La-Mont High Pressure Boiler with a neat sketch.

17. Discuss the working and the salient features of Benson Boiler with a neat sketch.

18. Discuss the concept of cogeneration. Explain topping cycle system.

19. Explain the bottoming cycle system of cogeneration with a suitable sketch.

20. What are the benefits and applications of cogeneration?