JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD
JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD B.Tech IV DIMENSIONAL STONE TECHNOLOGY Previous Question Paper (January/February - 2023 - R18)
Note: i) Question paper consists of Part A, Part B. ii) Part A is compulsory, which carries 25 marks. In Part A, Answer all questions. iii) In Part B, Answer any one question from each unit. Each question carries 10 marks and may have a, b as sub questions.
Part A
State granite resources in A.P. state.
Answer
Andhra Pradesh is one of the leading producers of granite in India, with significant resources distributed across several districts. The state is particularly renowned for its multi-colored granites and black galaxy granite. Major deposits are located in the districts of Prakasam, Nellore, Chittoor, Anantapur, and Srikakulam. These regions host extensive reserves of various commercial varieties, including Srikakulam Blue, Chittoor Black, and various shades of pink and grey granites, which are widely exploited for both domestic construction and international export.
Explain briefly the uses of Slate.
Answer
Slate is a fine-grained, foliated metamorphic rock widely valued for its durability, low water absorption, and ability to be split into thin, flat sheets. Its primary uses include:
- Roofing: Traditionally used as high-quality roofing tiles due to its excellent resistance to weathering, fire, and moisture.
- Flooring and Paving: Utilized for interior flooring and exterior paving because of its slip-resistant texture and aesthetic appeal.
- Cladding: Employed as a decorative and protective facing material for both interior and exterior wall cladding.
- Architectural Components: Used for items such as window sills, stair treads, hearths, and countertops due to its strength and ease of maintenance.
- Educational and Industrial: Historically used for chalkboards and currently used in specialized industrial applications requiring chemical resistance and electrical insulation.
What is a chainsaw?
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Explain briefly the belt saw?
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What are the purposes of a crane?
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Explain briefly the formation of the stone block.
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What is dressing?
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Explain briefly slurry handing?
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State the environmental impacts of mining.
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Explain briefly the secondary use of quarried land.
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Part B
Explain in detail the resources of limestones in India.
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Explain the procedure for obtaining a mining lease and preparation of project proposal.
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Explain the blasting techniques adopted in dimensional stone mines, with suitable diagrams.
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Hydraulic splitting
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Blind cut technique.
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Explain hole making, hole finder and laser beam.
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Discuss on application and development of diamond tools.
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Explain in detail the various types of abrasives commonly employed. State their use and criteria for selection.
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Explain the preparation and mounting of blades/discs and segments.
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Explain in detail various measures to be adopted to protect environment in mining.
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Land reclamation.
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Environmental management plan.
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