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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


  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.


  5. The binding material used in cemented carbide tools is

  6. A.

     Tungsten

    B.

     Chromium

    C.

     Silicon

    D.

     Cobalt


  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


  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


  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


  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


  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


  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


  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