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Mechanical Engineering :: Manufacturing and Production Technology

  1. In drilling aluminium, a drill with

  2. A.

     Zero helix angle is used

    B.

     Low helix angle is used

    C.

     High helix angle is used

    D.

     Any helix angle can be used

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  3. Jigs are used

  4. A.

     For holding and guiding the tool in drilling, reaming or tapping operations

    B.

     For holding the work in milling, grinding, planing or turning operations

    C.

     To check the accuracy of workpiece

    D.

     None of the above

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  5. The common welding error that occurs due to shrinkage of weld metal, faulty clamping of parts, faulty penetration or overheating at joints is called?

  6. A.

     Distortion

    B.

     Warping

    C.

     Porous weld

    D.

     Poor fusion

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  7. A drill considered as a cutting tool having zero rake, is known as a

  8. A.

     Flat drill

    B.

     Straight fluted drill

    C.

     Parallel shank twist drill

    D.

     Tapered shank twist drill

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  9. A lathe with four steps on the cone pulley and with back-gears will have

  10. A.

     Four direct speeds

    B.

     Four indirect speeds

    C.

     Four direct and four indirect speeds

    D.

     Eight indirect speeds

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  11. The process of removing metal by a cutter which is rotated against the direction of travel of workpiece, is called

  12. A.

     Up milling

    B.

     Down milling

    C.

     Face milling

    D.

     End milling

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  13. The process of removing metal by a cutter which is rotated in the same direction of travel of workpiece, is called

  14. A.

     Up milling

    B.

     Down milling

    C.

     Face milling

    D.

     End milling

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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. In metal machining, the zone where the heat is generated due to friction between the moving chip and the tool face, is called

  18. A.

     Friction zone

    B.

     Work-tool contact zone

    C.

     Shear zone

    D.

     None of these

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  19. The hardness of a grinding wheel is specified by

  20. A.

     Brinell hardness number

    B.

     Rockwell hardness number

    C.

     Vickers pyramid number

    D.

     Letter of alphabet

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