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Mechanical Engineering :: Production Engineering

  1. Jigs are heavier than fixtures in construction.

  2. A.
    Yes
    B.
    No

  3. In electro-chemical machining, the gap between the tool and work is kept as

  4. A.
    0.1 mm
    B.
    0.25 mm
    C.
    0.4 mm
    D.
    0.75 mm

  5. The process of improving the cutting action of the grinding wheel is called

  6. A.
    truing
    B.
    dressing
    C.
    facing
    D.
    clearing

  7. The cutting speed for drilling aluminium, brass and bronze with carbon steel drills is __________ cutting speed for drilling mild steel with high speed steel drills.

  8. A.
    equal to
    B.
    less than
    C.
    more than

  9. In electro-discharge machining, the tool is connected to cathode.

  10. A.
    Correct
    B.
    Incorrect

  11. Broaching is applied for machining

  12. A.
    internal and external surfaces
    B.
    round or irregular shaped holes
    C.
    external flat and contoured surfaces
    D.
    all of these

  13. Half nut is used to lock the lathe carriage to the lead screw for thread cutting.

  14. A.
    True
    B.
    False

  15. The advantage of a broaching operation is that

  16. A.
    rate of production is very high
    B.
    high accuracy and high class of surface finish is possible
    C.
    roughing and finishing cuts are completed in one pass of the tool
    D.
    all of the above

  17. The tool life __________ as the cutting speed increases.

  18. A.
    decreases
    B.
    increases

  19. The infeed grinding is used to

  20. A.
    produce tapers
    B.
    grind shoulders and formed surfaces
    C.
    grind long, slender shafts or bars
    D.
    ail of these