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Mechanical Engineering :: Production Engineering

  1. The abrasive recommended for grinding materials of high tensile strength is

  2. A.
    silicon carbide
    B.
    aluminium oxide
    C.
    sand stone
    D.
    diamond

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  3. The factor responsible for the formation of continuous chips with built up edge is

  4. A.
    low cutting speed and large rake angle
    B.
    low cutting speed and small rake angle
    C.
    high cutting speed and large rake angle
    D.
    high cutting speed and small rake angle

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  5. An important geometrical quantity in the cutting of metals which can be used as a criterion for machinability of metals is

  6. A.
    cutting speed
    B.
    feed rate
    C.
    shear angle
    D.
    tool geometry

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  7. In centreless grinding, the surface speed of regulating wheel is

  8. A.
    5 to 15 m/min
    B.
    15 to 60 m/min
    C.
    60 to 90 m/min
    D.
    90 to 120 m/min

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  9. In metal cutting, use of low feeds and high cutting speeds is desired when the objective is

  10. A.
    high metal removal rate
    B.
    dry machining
    C.
    use of soft cutting tool
    D.
    surface finish

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  11. The angle on which the strength of the tool depends is

  12. A.
    rake angle
    B.
    cutting angle
    C.
    clearance angle
    D.
    lip angle

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  13. Larger than 15° side cutting edge angle

  14. A.
    increases tool life
    B.
    decreases tool life
    C.
    produces chipping and decreases tool life
    D.
    results in excessive stress concentration and greater heat generation

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  15. Which of the following statement is correct for orthogonal cutting system?

  16. A.
    The cutting edge of the tool is perpendicular to the direction of tool travel.
    B.
    The cutting edge clears the width of the workpiece on either ends.
    C.
    The chip flows over the tool face and the direction of the chip flow velocity is normal to the cutting edge.
    D.
    all of the above

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  17. The angle made by the face of the tool and the plane parallel to the base of cutting tool is called

  18. A.
    rake angle
    B.
    cutting angle
    C.
    clearance angle
    D.
    lip angle

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  19. In case of turning, as the machining proceeds, the spindle speed must __________ with the decrease in diameter of work.

  20. A.
    decrease
    B.
    increase

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