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Mechanical Engineering :: Workshop Technology

  1. In blanking operation, the clearance is provided on

  2. 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

  3. In piercing operation, the clearance is provided on

  4. 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

  5. If an aluminium pattern made from a wooden master pattern is to be used for grey iron castings, then the shrinkage allowance allowed on the wooden pattern should be

  6. A.
    10 mm/m
    B.
    16 mm/m
    C.
    20 mm/m
    D.
    26 mm/m

  7. For arc welding

  8. A.
    alternating current with high frequency is used
    B.
    alternating current with low frequency is used
    C.
    direct current is used
    D.
    any one of these

  9. When the file is moved to and fro over the work, it is known as

  10. A.
    cross filing
    B.
    draw filing
    C.
    pull and push filing
    D.
    none of these

  11. The hot working of metals is carried out

  12. A.
    at the recrystallisation temperature
    B.
    below the recrystallisation temperature
    C.
    above the recrystallisation temperature
    D.
    at any temperature

  13. In a four high rolling mill, the diameter of backing up rolls is __________ the diameter of working rolls.

  14. A.
    equal to
    B.
    smaller than
    C.
    larger than

  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

  17. When the molten metal is fed in the cavity of a metallic mould by gravity, the method of casting is known as

  18. A.
    die casting method
    B.
    slush casting method
    C.
    permanent mould casting method
    D.
    centrifugal casting method

  19. Hot piercing is extensively used for making bolts and nuts.

  20. A.
    Yes
    B.
    No