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Mechanical Engineering :: Manufacturing and Production Technology

  1. A diamond locating pin is used in jigs and fixtures because

  2. A.

     Diamond is very hard and wear resistant

    B.

     It occupies very little space

    C.

     It helps in assembly with tolerance on centre distance

    D.

     It has a long life


  3. In metal machining, the work-tool contact zone is a zone where heat is generated due to

  4. A.

     Plastic deformation of metal

    B.

     Burnishing friction

    C.

     Friction between the moving chip and the tool face

    D.

     None of the above


  5. The snag grinding is done

  6. A.

     To produce good surface finish and high degree of accuracy

    B.

     To remove considerable amount of metal without regard to accuracy of the finished surface

    C.

     To grind exterior cylindrical surfaces

    D.

     Any one of the above


  7. The operation of smoothing and squaring the surface around a hole is known as

  8. A.

     Counter-sinking

    B.

     Counter-boring

    C.

     Trepanning

    D.

     Spot facing


  9. The operation of making a cone-shaped enlargement of the end of a hole is known as

  10. A.

     Counter-sinking

    B.

     Counter-boring

    C.

     Trepanning

    D.

     Spot facing


  11. Gear burnishing is a process for

  12. A.

     Surface finishing

    B.

     Undercut gears

    C.

     Cycloidal gears

    D.

     Removing residual stresses from teeth roots


  13. Drilling is an example of

  14. A.

     Orthogonal cutting

    B.

     Oblique cutting

    C.

     Simple cutting

    D.

     Uniform cutting


  15. NC contouring is an example of

  16. A.

     Continuous path positioning

    B.

     Point-to-point positioning

    C.

     Absolute positioning

    D.

     Incremental positioning


  17. In machining metal, cutting force at the cutting edge is measured by a

  18. A.

     Wattmeter

    B.

     Dynamometer

    C.

     Hydrometer

    D.

     Pyrometer


  19. Trepanning is performed for

  20. A.

     Finishing a drilled hole

    B.

     Producing a large hole without drilling

    C.

     Truing a hole for alignment

    D.

     Enlarging a drilled hole