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Mechanical Engineering :: Workshop Technology

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Workshop Technology - section-7
Workshop Technology - section-8
  1. In a cold 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.

     Low temperature and pressure is used

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  2. Carburising flame is used to weld

    3. A.

     Steel, cast iron, copper, aluminium etc
    B.

     Brass and bronze
    C.

     Hard surfacing materials such as stellite
    D.

     All of these

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  3. A progressive limit gauge has

    4. A.

     'Go' and 'Not go' member on the same side of the gauge
    B.

     Separate 'Go' and 'Not go' members
    C.

     'Go' member at one end and 'Not go' member at the other end
    D.

     None of the above

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  4. The temperature at which the new grains are formed in the metal is called

    5. A.

     Lower critical temperature
    B.

     Upper critical temperature
    C.

     Eutectic temperature
    D.

     Recrystallisation temperature

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  5. The purpose of a gate is to

    6. A.

     Delivers molten metal into the mould cavity
    B.

     Act as a reservoir for the molten metal
    C.

     Feed the molten metal to the casting in order to compensate for the shrinkage
    D.

     Delivers molten metal from pouring basin to gate

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  6. In order to check the clearance between two mating surfaces, a ________ gauge should be used.

    7. A.

     Ring
    B.

     Plug
    C.

     Feeler
    D.

     None of these

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  7. In forehand welding, the angle between the welding rod and the work is kept as

    8. A.

     30°-40°
    B.

     40°-50°
    C.

     50°-60°
    D.

     60°-70°

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  8. In backhand welding, the angle between the welding torch and the work is kept as

    9. A.

     30°-40°
    B.

     40°-50°
    C.

     50°-60°
    D.

     60°-70°

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  9. In electric resistance welding, voltage required for heating is

    10. A.

     1 to 5 volts
    B.

     6 to 10 volts
    C.

     11 to 20 volts
    D.

     50 to 100 volts

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  10. To prevent the body of the blade from jamming in the saw cut, the teeth of blade are

    11. A.

     Strengthened
    B.

     Sharpened
    C.

     Set
    D.

     All of these

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