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BT-106 · Manufacturing Practices/Important Questions

Manufacturing Practices (BT-106) - Important Questions

  1. Unit 17 Marks Medium Priority

    Define manufacturing. Explain the classification of manufacturing processes into primary, secondary and tertiary processes with suitable examples for each category.

    Core definition and classification; fundamental concept in Unit 1; frequently examined to test understanding of scope of manufacturing.

  2. Unit 15 Marks High Priority

    List and explain the general safety rules to be followed in a machine workshop. Describe the purpose and typical contents of Personal Protective Equipment (PPE) used in a mechanical workshop.

    Basic and essential safety practices in workshops are routinely asked; high priority for practical exams.

  3. Unit 110 Marks Medium Priority

    Explain the main types of manufacturing processes: forming, casting, machining and joining. For each type, give two industrial examples and discuss typical advantages and limitations.

    Core taxonomy of manufacturing processes; often used to assess breadth of knowledge across process categories.

  4. Unit 110 Marks High Priority

    Describe the construction, principal parts and working of a lathe machine. Also briefly explain the basic operations performed on a lathe. Compare the lathe with milling and drilling machines in terms of typical operations and workholding requirements.

    Fundamental machine tools (lathe, milling, drilling, grinding) are a staple topic and frequently examined in detail.

  5. Unit 110 Marks High Priority

    Describe the construction, working principle and measurement procedure for the following instruments: vernier caliper, micrometer screw gauge and dial indicator. Explain how to determine the least count for each instrument.

    Measurement instruments and their use are core practical topics; repeated often in past exams.

  6. Unit 114 Marks High Priority

    Explain the terms: nominal size, actual size, allowance, tolerance, upper limit and lower limit. Describe types of fits (clearance, interference and transition) with sketches. Given a shaft nominal size $25\,\text{mm}$ with tolerance limits $25.000\,\text{mm}$ and $24.980\,\text{mm}$ and a hole nominal size $25\,\text{mm}$ with tolerance limits $25.020\,\text{mm}$ and $25.000\,\text{mm}$, compute the tolerance for shaft and hole and the maximum and minimum clearance.

    Limits, fits and tolerances form a critical conceptual and numerical topic in Unit 1; typically asked with calculation problems.

  7. Unit 17 Marks Medium Priority

    Define surface roughness and surface finish. Explain commonly used surface roughness parameters such as $R_a$. Describe standard surface finish symbols used on engineering drawings and explain their meaning.

    Surface finish and roughness symbols are practical essentials; commonly examined conceptually and for interpretation of drawing symbols.

  8. Unit 15 Marks Low Priority

    Explain the methods and tools used for marking out and layout operations on a component, including the use of surface plate, height gauge, scriber and centre punch. Describe the step-by-step procedure to mark the centre for drilling on a flat plate.

    Layout and marking operations are basic workshop skills; occasionally set as short questions.

  9. Unit 17 Marks Medium Priority

    Differentiate between a jig and a fixture. Explain with two examples how each is used to improve manufacturing accuracy and productivity.

    Jigs and fixtures conceptual distinction is a standard short-answer topic.

  10. Unit 17 Marks Medium Priority

    Describe common cutting tool materials used in machining (e.g. high speed steel, carbide, ceramic). Explain the terms rake angle, clearance angle and nose radius for a single point cutting tool and discuss their influence on cutting performance.

    Cutting tool materials and nomenclature are standard theoretical topics in Unit 1.

  11. Unit 15 Marks Low Priority

    Describe the procedure to calibrate a vernier micrometer. Explain how to determine and verify the least count of a vernier caliper and a micrometer screw gauge.

    Calibration and least count determination are practical, occasionally asked short numericals.

  12. Unit 17 Marks Low Priority

    Explain the principle and working of a Coordinate Measuring Machine (CMM). Discuss its advantages and limitations compared to conventional hand gauges and measuring instruments.

    CMMs are modern measurement tools; relevance is growing though less frequently examined at basic level.

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