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Mechanical Engineering :: Manufacturing and Production Technology

Manufacturing and Production Technology - section-1
  1. In centreless grinding, work place centre will be

    2. A.

     Above the line joining the two wheel centres
    B.

     Below the line joining the two wheel centres
    C.

     On the line joining the two wheel centres
    D.

     At the intersection of the line joining the wheel centres with the work place plane

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  2. In down milling, the thickness of chip is

    3. A.

     Minimum at the beginning of the cut and maximum at the end of the cut
    B.

     Maximum at the beginning of the cut and minimum at the end of the cut
    C.

     Uniform throughout the cut
    D.

     None of these

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  3. In up milling, the thickness of chip is

    4. A.

     Minimum at the beginning of the cut and maximum at the end of the cut
    B.

     Maximum at the beginning of the cut and minimum at the end of the cut
    C.

     Uniform throughout the cut
    D.

     None of these

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  4. When two main plates are kept in alignment butting each other and riveted with cover plate on both sides of the main plates with two rows of rivets in each main plate, the joint is known as _______ double cover butt joint.

    5. A.

     Single riveted
    B.

     Double riveted
    C.

     Both (A) and (B)
    D.

     None of these

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  5. As tool and work are not in contact in EDM process

    6. A.

     No relative motion occurs between them
    B.

     No wear of tool occurs
    C.

     No power is consumed during metal cutting
    D.

     No force between tool and work occurs

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  6. Glazing in grinding wheels __________ cutting capacity.

    7. A.

     Has no effect on
    B.

     Increase
    C.

     Decrease
    D.

     None of these

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  7. Ceramic cutting tools are

    8. A.

     Made by cold pressing of aluminium oxide powder
    B.

     Available in the form of tips
    C.

     Brittle and have low bending strength
    D.

     All of these

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  8. The process of changing the shape of grinding wheel as it becomes worn due to breaking away of the abrasive and bond, is called

    9. A.

     Truing
    B.

     Dressing
    C.

     Facing
    D.

     Clearing

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  9. The relation between the tool life (T) in minutes and cutting speed (V) in m/min is (where n = An exponent, which depends upon the tool and workpiece, and C = A constant)

    10. A.

     VnT = C
    B.

     VTn = C
    C.

     Vn/T = C
    D.

     V/Tn = C

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  10. What is the type of welding defect is caused due to stresses on heating and cooling called?

    11. A.

     Incomplete penetration
    B.

     Shrinkage void
    C.

     Slag Entrapment (Inclusions)
    D.

     Incomplete fusion

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