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BT-106 · Manufacturing Practices/Important Questions

Manufacturing Practices (BT-106) - Important Questions

  1. Unit 17 Marks High Priority

    Define casting. Describe in detail the steps involved in a typical casting process, starting from pattern making to fettling and inspection.

    Fundamental definition and process flow from Unit 1; core theory frequently examined.

  2. Unit 17 Marks High Priority

    Explain the different types of patterns used in foundry practice. Discuss pattern allowances and explain why they are necessary.

    Core topic on patterns and allowances; commonly asked for definitions and sketches.

  3. Unit 110 Marks High Priority

    Discuss the important properties of molding sand (permeability, cohesiveness, strength, refractoriness and moisture content). Describe the standard laboratory tests used to determine these properties.

    Covers molding sand properties and standard tests; essential practical knowledge from Unit 1.

  4. Unit 110 Marks High Priority

    Describe the construction and working of a cupola furnace used for melting cast iron. State its advantages and limitations.

    Important furnace topic; cupola is a staple of foundry practice questions.

  5. Unit 114 Marks Medium Priority

    What is a gating system? Explain the functions of a gating system. Describe the elements of a gating system and discuss design considerations and common types of gating systems.

    Design and function of gating systems are core design questions; often appears as a long question.

  6. Unit 17 Marks Medium Priority

    What is a riser (feeder) in casting? Explain the purpose of risers and describe the main types of risers and the criteria for their design.

    Risers/feeders are critical to casting integrity; commonly examined along with gating.

  7. Unit 17 Marks Medium Priority

    Explain the solidification of casting metals. Discuss directional solidification, the role of heat flow, and the use of chills to control solidification.

    Solidification concepts including directional solidification and chills are core metallurgical concepts in Unit 1.

  8. Unit 110 Marks High Priority

    List the common casting defects. Explain the causes and remedies for at least five common defects such as blow holes, porosity, cold shut, shrinkage, and sand wash.

    Comprehensive defects question; frequently asked to test problem identification and remedies.

  9. Unit 17 Marks Medium Priority

    Describe the core making process. Discuss core sands, core boxes, core prints and methods of core setting in molds.

    Core making fundamentals; often part of practical and theory questions in Unit 1.

  10. Unit 15 Marks Medium Priority

    Differentiate between green sand molding and dry sand molding. Give advantages and limitations of each method.

    Comparison question testing understanding of molding methods.

  11. Unit 17 Marks Medium Priority

    Explain the investment (lost wax) casting process. Describe the steps involved and mention typical applications and advantages of the process.

    Non-ferrous and precision casting process frequently included in Unit 1 overview.

  12. Unit 17 Marks Low Priority

    Describe the centrifugal casting process. Distinguish between true centrifugal casting and semi-centrifugal casting and state typical applications of each.

    Special casting technique; less frequent but relevant for comprehensive coverage of Unit 1.

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