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Mechanical Engineering :: Manufacturing and Production Technology

  1. In machining metals, surface roughness is due to

  2. A.

     Feed marks or ridges left by the cutting tool

    B.

     Fragment of built-up edge on the machined surface

    C.

     Cutting tool vibrations

    D.

     All of these

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  3. For turning internal tapers, the suitable method is

  4. A.

     By a form tool

    B.

     By setting over the tail stock

    C.

     By a taper turning attachment

    D.

     By swiveling the compound rest

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  5. For turning small taper on long workpiece, the suitable method is

  6. A.

     By a form tool

    B.

     By setting over the tail stock

    C.

     By a taper turning attachment

    D.

     By swiveling the compound rest

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  7. In oblique cutting system, the maximum chip thickness

  8. A.

     Occurs at the middle

    B.

     May not occur at the middle

    C.

     Depends upon the material of the tool

    D.

     Depends upon the geometry of the tool

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  9. Which one among the following welding processes uses non-consumable electrode?

  10. A.

     Gas metal arc welding

    B.

     Submerged arc welding

    C.

     Gas tungsten arc welding

    D.

     Flux coated arc welding

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  11. The trade name of a nonferrous cast alloy composed of cobalt, chromium and tungsten is called

  12. A.

     Ceramic

    B.

     Stellite

    C.

     Diamond

    D.

     Cemented carbide

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  13. For generating a Coon’s surface we require

  14. A.

     A set of grid points on the surface

    B.

     A set of grid control points

    C.

     Four bounding curves defining the surface

    D.

     Two bounding curves and a set of grid control points

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  15. Crater wear occurs mainly on the

  16. A.

     Nose part, front relief face and side relief face of the cutting tool

    B.

     Face of the cutting tool at a short distance from the cutting edge only

    C.

     Cutting edge only

    D.

     Front face only

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  17. Flank wear occurs mainly on the

  18. A.

     Nose part, front relief face and side relief face of the cutting tool

    B.

     Face of the cutting tool at a short distance from the cutting edge

    C.

     Cutting edge only

    D.

     Front face only

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  19. The aluminium oxide abrasive is chiefly used for grinding

  20. A.

     High speed steel

    B.

     Carbon steel

    C.

     Wrought iron

    D.

     All of these

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