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Mechanical Engineering :: Manufacturing and Production Technology

  1. The tail stock set over method of taper turning is preferred for

  2. A.

     Internal tapers

    B.

     Small tapers

    C.

     Long slender tapers

    D.

     Steep tapers


  3. In a metal arc welding process, metal transfer across the arc may take place by a method of material transfer where the metal transfers across the arc is in larger drops. This is at the rate of 100 drops/sec or less, what is this known as

  4. A.

     Globular transfer

    B.

     Spray transfer

    C.

     GMAW practice

    D.

     Dip transfer


  5. A fine grained grinding wheel is used to grind

  6. A.

     Hard and brittle materials

    B.

     Soft and ductile materials

    C.

     Hard and ductile materials

    D.

     Soft and brittle materials


  7. A coarse grained grinding wheel is used to grind

  8. A.

     Hard and brittle materials

    B.

     Soft and ductile materials

    C.

     Hard and ductile materials

    D.

     Soft and brittle materials


  9. When the end of a tap is tapered for about three or four threads, it is known as a

  10. A.

     Taper tap

    B.

     Bottoming tap

    C.

     Second tap

    D.

     None of these


  11. Which one of the following is a solid state joining process?

  12. A.

     Gas tungsten arc welding

    B.

     Resistance spot welding

    C.

     Friction welding

    D.

     Submerged arc welding


  13. The angle between the lathe centres is

  14. A.

     30°

    B.

     45°

    C.

     60°

    D.

     90°


  15. The taper on the lathe spindle is

  16. A.

     1 in 10

    B.

     1 in 15

    C.

     1 in 20

    D.

     1 in 30


  17. In _________ operation, the cutting force is maximum when the tooth begins its cut and reduces it to minimum when the tooth leaves the work.

  18. A.

     Up milling

    B.

     Down milling

    C.

     Face milling

    D.

     End milling


  19. In a single point turning operation with a cemented carbide and steel combination having a Taylor exponent of 0.25, if the cutting speed is halved, then tool life will become

  20. A.

     Half

    B.

     Two times

    C.

     Eight times

    D.

     Sixteen times