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Mechanical Engineering :: Manufacturing and Production Technology

  1. Flank wear depends upon the

  2. A.

     Hardness of the work and tool material at the operating temperature

    B.

     Amount and distribution of hard constituents in the work material

    C.

     Degree of strain hardening in the chip

    D.

     All of these


  3. Crack in grinding wheel is developed due to

  4. A.

     High temperature developed at the contact of the wheel face and work

    B.

     Grinding hard work

    C.

     Low speed of wheel

    D.

     High speed of wheel


  5. The machining of titanium is difficult due to

  6. A.

     High thermal conductivity of titanium

    B.

     Chemical reaction between tool and work

    C.

     Low tool-chip contact area

    D.

     None of these


  7. The angle formed by the leading edge of the land with a plane having the axis of the drill, is called

  8. A.

     Helix or rake angle

    B.

     Point angle

    C.

     Chisel edge angle

    D.

     Lip clearance angle


  9. The obtuse angle, included between the chisel edge and the lip as viewed from the end of a drill, is called

  10. A.

     Helix or rake angle

    B.

     Point angle

    C.

     Chisel edge angle

    D.

     Lip clearance angle


  11. Segmental chips are formed during machining

  12. A.

     Mild steel

    B.

     Cast iron

    C.

     High speed steel

    D.

     High carbon steel


  13. When the cutting edge of the tool is dull, then during machining

  14. A.

     Continuous chips are formed

    B.

     Discontinuous chips are formed

    C.

     Continuous chips with built-up edge are formed

    D.

     No chips are formed


  15. In oblique cutting system, the cutting edge of the tool

  16. A.

     May clear the width of the workpiece

    B.

     May or may not clear the width of the workpiece

    C.

     May not clear the width of the workpiece

    D.

     Should always clear the width of the workpiece


  17. The velocity of tool along the tool face is known as

  18. A.

     Shear velocity

    B.

     Chip velocity

    C.

     Cutting velocity

    D.

     Mean velocity


  19. Which of the following operation is first performed?

  20. A.

     Spot facing

    B.

     Boring

    C.

     Tapping

    D.

     Drilling