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Mechanical Engineering :: Workshop Technology

  1. The brass and bronze are welded by _________ flame.

  2. A.

     Neutral

    B.

     Oxidizing

    C.

     Carburising

    D.

     All of these


  3. A gimlet is a ________ tool.

  4. A.

     Boring

    B.

     Marking

    C.

     Cutting

    D.

     None of these


  5. In TIG arc welding, the welding zone is shielded by an atmosphere of

  6. A.

     Helium gas

    B.

     Argon gas

    C.

     Either (A) or (B)

    D.

     None of these


  7. In sheet metal blanking, shear is provided on punches and dies so that

  8. A.

     Press load is reduced

    B.

     Good cut edge is obtained

    C.

     Warping of sheet is minimized

    D.

     Cut blanks is straight


  9. For obtaining a cup of diameter 25 mm and height 15 mm by drawing, the size of the round blank should be approximately

  10. A.

     42 mm

    B.

     44 mm

    C.

     46 mm

    D.

     48 mm


  11. Scribing block is used to

  12. A.

     Hold the round bars during marking

    B.

     Check the trueness of flat surfaces

    C.

     Locate the centres of round bars

    D.

     Check the surface roughness


  13. The cutting edge of a chisel should be

  14. A.

     Hardened

    B.

     Tempered

    C.

     Hardened and tempered

    D.

     Case hardened


  15. For gas welding, the pressure desired at the welding torch for acetylene is

  16. A.

     7 to 103 kN/m²

    B.

     70 to 280 kN/m²

    C.

     280 to 560 kN/m²

    D.

     560 to 840 kN/m²


  17. The fullers are used

  18. A.

     For finishing flat surfaces

    B.

     For necking down a piece of work

    C.

     For punching a hole

    D.

     To finish the punched hole


  19. A ring gauge is used to

  20. A.

     Check the diameter of shafts or studs

    B.

     Test the accuracy of holes

    C.

     Check the clearance between two mating surfaces

    D.

     All of the above