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Mechanical Engineering :: Manufacturing and Production Technology

  1. EDM machining is applied for

  2. A.

     Shaping carbide dies and punches having complicated profiles

    B.

     Making large number of small holes in sieves and fuel nozzles

    C.

     Embossing and engraving on harder materials

    D.

     All of these

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  3. The grinding operation is a

  4. A.

     Shaping operation

    B.

     Forming operation

    C.

     Surface finishing operation

    D.

     Dressing operation

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  5. A process of removing metal by pushing or pulling a cutting tool is called

  6. A.

     Up milling

    B.

     Down milling

    C.

     Forming

    D.

     Broaching

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

  8. A.

     Rake angle

    B.

     Cutting angle

    C.

     Clearance angle

    D.

     Lip angle

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  9. For fast removal of materials during grinding, a _________ grinding wheel is used.

  10. A.

     Course grained

    B.

     Fine grained

    C.

     Medium grained

    D.

     None of these

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  11. While cutting helical gears on a non-differential gear hobber, the feed change gear ratio is

  12. A.

     Independent of index change gear ratio

    B.

     Dependent on speed change gear ratio

    C.

     Interrelated to index change gear ratio

    D.

     Independent of speed and index change gear ratio

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  13. In orthogonal turning of a low carbon steel bar of diameter 150 mm with uncoated carbide tool, the cutting velocity is 90 m/min. The feed is 0.24 mm/rev and the depth of cut is 2 mm. The chip thickness obtained is 0.48 mm. If the orthogonal rake angle is zero and the principle cutting edge angle is 90⁰, the shear angle in degree is

  14. A.

     20.56

    B.

     26.56

    C.

     30.56

    D.

     36.56

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  15. The lip angle is the angle

  16. A.

     Between the tool face and the ground end surface of flank

    B.

     Made by the face of the tool and the plane parallel to the base of the cutting tool

    C.

     Between the face of the tool and a line tangent to the machined surface at the cutting point

    D.

     None of the above

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  17. The tool material, for faster machining, should have

  18. A.

     Wear resistance

    B.

     Red hardness

    C.

     Toughness

    D.

     All of these

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  19. A grinding wheel is said to be of _________ if it holds the abrasive grains more securely.

  20. A.

     Soft grade

    B.

     Medium grade

    C.

     Hard grade

    D.

     None of these

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