GTU BE 2019 Summer Question Papers || Gujarat Technological University
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER-V (NEW) EXAMINATION - SUMMER 2019
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Subject Code: 2152104
Subject Name: Fuels, Furnaces, Refractories and Pyrometry
Time: 02:30 PM TO 05:00 PM
Instructions:
- Attempt all questions.
- Make suitable assumptions wherever necessary.
- Figures to the right indicate full marks.
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| Q.1 | (a) | Discuss the use of Wind energy as a fuel. | 03 |
| (b) | Describe the importance of proximate and ultimate analysis of fuel. | 04 | |
| (c) | Define fuel and prepare a comparative statement between advantages and disadvantages of solid, liquid and gaseous fuels. | 07 | |
| Q.2 | (a) | List various factors which affect heating capacity of furnaces. | 03 |
| (b) | Discuss the manufacturing process of producer gas. | 04 | |
| (c) | Explain that how one can determine the calorific value of a given coal sample by using bomb calorimeter. | 07 | |
| OR | |||
| (a) | Differentiate between low temperature carbonization (LTC) & high temperature carbonization (HTC) process. | 03 | |
| (b) | Discuss effect of excess air on products of combustion. | 04 | |
| (c) | Discuss the Hardgrove grindability test. | 07 | |
| Q.3 | (a) | List various factors should be taken into account during furnace design. | 03 |
| (b) | Discuss about chimney height. | 04 | |
| (c) | OR | 07 | |
| (a) | Discuss the factors governing complete combustion of a fuel. | 03 | |
| (b) | Discuss the method to recover the by-products in carbonization process. | 04 | |
| (c) | Explain the role of draft in furnace design. Differentiate between Natural, forced, induced and balanced draft. | 07 | |
| Q.4 | (a) | Define refractory and classify it. Give examples of each. | 03 |
| (b) | List the advantages of monolithic refractories. | 04 | |
| (c) | Explain the construction and working of induction furnace. | 07 | |
| OR | |||
| (a) | What is the difference between coreless and channel induction furnace? | 03 | |
| (b) | What is clinker formation? How one can minimize it. | 04 | |
| (c) | Mention the types of arc furnace and explain the construction and working of arc furnace. Enlist the advantages of direct arc furnaces? | 07 | |
| Q.5 | (a) | What is thermoelectric inversion? Explain. | 03 |
| (b) | Discuss the working principle of Thermocouple. | 04 | |
| (c) | What is the importance of pyrometric cone equivalent? Explain the test with figure. | 07 | |
| OR | |||
| (a) | What are the parameters affect accuracy of Radiation Pyrometers? | 03 | |
| (b) | Discuss the general requirements of a refractory material. | 04 | |
| (c) | Explain with diagram the working principle of temperature measurement by optical pyrometer. | 07 | |
Date: 31/05/2019
Total Marks: 70
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