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Mechanical Engineering :: Manufacturing and Production Technology

  1. The material which on machining produces chips with built up edge is

  2. A.

     Brittle material

    B.

     Tough material

    C.

     Hard material

    D.

     Ductile material

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  3. A 15 mm drilling machine means that it can drill a hole

  4. A.

     Of maximum diameter 15 mm

    B.

     In 15 mm thick plates

    C.

     None of these

    D.

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  5. The binding material used in cemented carbide tools is

  6. A.

     Tungsten

    B.

     Chromium

    C.

     Silicon

    D.

     Cobalt

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  7. In the relation VTn = C, the value of n for carbide tools is

  8. A.

     0.1 to 0.2

    B.

     0.20 to 0.25

    C.

     0.25 to 0.40

    D.

     0.40 to 0.55

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  9. In the relation VTn = C, the value of n for ceramic tools is

  10. A.

     0.1 to 0.2

    B.

     0.20 to 0.25

    C.

     0.25 to 0.40

    D.

     0.40 to 0.55

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  11. For machining a cast iron workpiece by a high speed steel tool, the average cutting speed is

  12. A.

     10 m/min

    B.

     15 m/min

    C.

     22 m/min

    D.

     30 m/min

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  13. For machining a mild steel workpiece by a high speed steel tool, the average cutting speed is

  14. A.

     5 m/min

    B.

     10 m/min

    C.

     15 m/min

    D.

     30 m/min

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  15. The specific cutting energy used for establishing the machinability of the metal depends upon its

  16. A.

     Coefficient of friction

    B.

     Micro-structure

    C.

     Work hardening characteristics

    D.

     All of these

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  17. The cutting speed of a drill depends upon the

  18. A.

     Material of drill

    B.

     Type of material to be drilled

    C.

     Quality of surface finish desired

    D.

     All of these

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  19. The size of abrasive grain required in a grinding wheel depends upon the

  20. A.

     Amount of material to be removed

    B.

     Hardness of material being ground

    C.

     Finish desired

    D.

     All of these

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