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Mechanical Engineering :: Manufacturing and Production Technology

  1. In a plain milling cutter, the portion of the gash adjacent to the cutting edge on which the chip impinges is called

  2. A.

     Face

    B.

     Fillet

    C.

     Land

    D.

     Lead


  3. The tap used to cut threads in a blind hole is

  4. A.

     Taper tap

    B.

     Second tap

    C.

     Bottoming tap

    D.

     Any one of these


  5. The method of grinding used to produce a straight or tapered surface on a workpiece, is

  6. A.

     Internal cylindrical grinding

    B.

     Form grinding

    C.

     External cylindrical grinding

    D.

     Surface grinding


  7. Glazing in grinding wheels can be decreased by

  8. A.

     Using a harder wheel or by increasing the wheel speed

    B.

     Using a softer wheel or by decreasing the wheel speed

    C.

     Using a harder wheel or by decreasing the wheel speed

    D.

     Using a softer wheel or by increasing the wheel speed


  9. Internal gear cutting operation can be performed by

  10. A.

     Milling

    B.

     Shaping with rack cutter

    C.

     Shaping with pinion cutter

    D.

     Hobbing


  11. In plunge grinding

  12. A.

     The work is reciprocated as the wheel feeds to produce cylinders longer than the width of wheel face

    B.

     The work rotates in a fixed position as the wheel feeds to produce cylinders equal to or shorter than the width of wheel face

    C.

     The work is reciprocated as the wheel feeds to produce cylinders shorter than the width of wheel face

    D.

     The work rotates in a fixed position as the wheel feeds to produce cylinders longer than the width of wheel face


  13. In reaming process

  14. A.

     Metal removal rate is high

    B.

     High surface finish is obtained

    C.

     High form accuracy is obtained

    D.

     High dimensional accuracy is obtained


  15. The addition of lead, sulphur and phosphorus to low carbon steels, help to

  16. A.

     Reduce built up edge

    B.

     Break up chips

    C.

     Improve machinability

    D.

     All of these


  17. In an interchangeable assembly, shafts of size 25.000 -0.010⁺⁰∙⁰⁴⁰ mm mate with holes of size 25.000 -0.020⁺⁰∙⁰³⁰, the maximum interference (in microns) in the assembly is

  18. A.

     40

    B.

     30

    C.

     20

    D.

     10


  19. In order to obtain a surface finish in the range of 0.75 μm to 1.25 μm , the operation used is called.

  20. A.

     Grinding

    B.

     Lapping

    C.

     Honing

    D.

     Buffing