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Mechanical Engineering :: Workshop Technology

  1. The casting method adopted for ornaments and toys of non-ferrous alloys, is

  2. A.
    permanent mould casting
    B.
    slush casting
    C.
    die casting
    D.
    centrifugal casting

  3. In a cold chamber die casting machine

  4. A.
    melting pot is separate from the machine
    B.
    melting pot is an integral part of the machine
    C.
    melting pot may have any location
    D.
    low temperature and pressure is used

  5. Structural sections such as rails, angles, I-beams are made by

  6. A.
    hot rolling
    B.
    hot drawing
    C.
    hot piercing
    D.
    hot extrusion

  7. The minimum size of a billet is 10 cm x 10 cm.

  8. A.
    Agree
    B.
    Disagree

  9. In welding magnesium with TIG arc welding, direct current with __________ is used.

  10. A.
    straight polarity
    B.
    reversed polarity

  11. Cutting and forming operations can be performed in a single operation in a

  12. A.
    simple die
    B.
    progressive die
    C.
    compound die
    D.
    combination die

  13. The teeth of hacksaw blade are bent

  14. A.
    towards right
    B.
    towards left
    C.
    alternately towards right and left and every third or fourth left straight
    D.
    may be bent in any direction

  15. In a cold chamber die casting machine, a measured quantity of molten metal is brought in a ladle from the melting pot to a chamber and forced into the closed die-section by applying hydraulic pressure upon the plunger.

  16. A.
    Correct
    B.
    Incorrect

  17. For cutting brass, the hacksaw blade should have __________ teeth per 25 mm.

  18. A.
    14
    B.
    24
    C.
    32
    D.
    40

  19. A casting defect which occurs near the ingates as rough lumps on the surface of a casting is known as

  20. A.
    shift
    B.
    sand wash
    C.
    swell
    D.
    scab