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Mechanical Engineering :: Manufacturing and Production Technology

  1. The example of snag grinding is

  2. A.

     Trimming the surface left by spruces and risers on castings

    B.

     Grinding the parting line left on castings

    C.

     Removing flash on forgings

    D.

     All of these

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  3. A twist drill is specified by its

  4. A.

     Shank, material and diameter

    B.

     Shank, lip angle and size of flute

    C.

     Material, length of body and helix angle

    D.

     Any one of these

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  5. The size of a lathe is specified by the

  6. A.

     Length between centers

    B.

     Swing diameter over the bed

    C.

     Swing diameter over the carriage

    D.

     All of these

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  7. What is the type of welding defect caused due to shrinkage during solidification and by weld stresses called?

  8. A.

     Incomplete fusion

    B.

     Lamellar tearing

    C.

     Mismatch

    D.

     Shrinkage void

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  9. The high cutting speed and large rake angle of the tool will result in the formation of

  10. A.

     Continuous chips

    B.

     Discontinuous chip

    C.

     Continuous chips with built up edge

    D.

     None of these

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

  12. A.

     High metal removal rate

    B.

     Dry machining

    C.

     Use of soft cutting tool

    D.

     Surface finish

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  13. The factor which affects the tool life is

  14. A.

     Tool geometry

    B.

     Cutting speed

    C.

     Feed rate

    D.

     All of these

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  15. Which of the following statement is wrong as regard to down milling?

  16. A.

     It can not be used on old machines due to backlash between the feed screw of the table and the nut.

    B.

     The chips are disposed off easily and do not interfere with the cutting.

    C.

     The surface milled appears to be slightly wavy.

    D.

     The coolant can be poured directly at the cutting zone where the cutting force is maximum.

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  17. The angle between the face and flank of the single point cutting tool is known as

  18. A.

     Rake angle

    B.

     Clearance angle

    C.

     Lip angle

    D.

     Point angle

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  19. In which of the following machine, the work remains stationary and the tool is rotated?

  20. A.

     Vertical boring machine

    B.

     Horizontal boring machine

    C.

     Precision boring machine

    D.

     Jig boring machine

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