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Mechanical Engineering :: Workshop Technology

  1. In sheet metal work, he cutting force on the tool can be reduced by

  2. A.

     Grinding the cutting edges sharp

    B.

     Increasing the hardness of tool

    C.

     Providing shear on tool

    D.

     Increasing the hardness of die

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  3. The edge of a steel plate cut by oxygen cutting will get hardened when the carbon content is

  4. A.

     Less than 0.1 percent

    B.

     Less than 0.3 percent

    C.

     More than 0.3 percent

    D.

     Anywhere between 0.1 to 1 percent

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  5. In average work, the tolerance produced by investment casting method is

  6. A.

     ±0.05 mm

    B.

     +0.2 mm

    C.

     +05 mm

    D.

     +1 mm

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  7. In blanking operation, the clearance is provided on

  8. A.

     Punch

    B.

     Die

    C.

     Half on the punch and half on the die

    D.

     Either on punch or die depending upon designer's choice

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  9. In piercing operation, the clearance is provided on

  10. A.

     Punch

    B.

     Die

    C.

     Half on the punch and half on the die

    D.

     Either on punch or die depending upon designer's choice

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  11. The cross-section of a chisel is usually

  12. A.

     Rectangular

    B.

     Square

    C.

     Hexagonal

    D.

     Octagonal

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  13. Cores are used to

  14. A.

     Form internal cavities in the casting

    B.

     Improve mould surface

    C.

     Form a part of a green sand mould

    D.

     All of these

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  15. The welding process used to join the ends of two pipes of uniform cross-section, is

  16. A.

     Spot welding

    B.

     Seam welding

    C.

     Projection welding

    D.

     Upset butt welding

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  17. The consumable electrode is used in

  18. A.

     Carbon arc welding

    B.

     Submerged arc welding

    C.

     TIG arc welding

    D.

     MIG arc welding

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  19. During drawing operation, the states of stress in cup would include

  20. A.

     Compressive stress in the flange

    B.

     Tensile stress in the wall

    C.

     Both (A) and (B)

    D.

     None of these

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