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Mechanical Engineering :: Workshop Technology

  1. In a hot chamber die casting machine

  2. 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.
    high temperature and pressure is used

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  3. The electrodes used in spot welding have a tip of

  4. A.
    stainless steel
    B.
    aluminium
    C.
    copper
    D.
    brass

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  5. Blanking and piercing operations can be performed simultaneously in a

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

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  7. A pattern maker's shrinkage rule considers

  8. A.
    all pattern allowances
    B.
    only shrinkage allowance
    C.
    all materials to be cast
    D.
    all materials of the pattern

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  9. The tolerance produced by shell moulding process of casting is

  10. A.
    +0.05 mm
    B.
    ±0.2 mm
    C.
    +0.5 mm
    D.
    ±1 mm

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  11. Galvanising is a

  12. A.
    zinc diffusion process
    B.
    process of coating zinc by hot dipping
    C.
    process used for making thin phosphate coating on steel
    D.
    none of the above

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  13. The ferrous metals require more machining allowance than non-ferrous metals.

  14. A.
    True
    B.
    False

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  15. In a four high rolling mill, there are four rolls out of which

  16. A.
    one is working roll and three are backing up rolls
    B.
    two are working rolls and two are backing up rolls
    C.
    three are working rolls and one is backing up roll
    D.
    all of the four are working rolls

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  17. When a pattern is made in three parts, the bottom part is known as a cope.

  18. A.
    True
    B.
    False

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  19. In __________ welding, the weld may be made either from left to right or from right to left.

  20. A.
    fore-hand
    B.
    back-hand
    C.
    vertical

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