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Mechanical Engineering :: Production Engineering

  1. In which of the following machine, the work remains stationary and the tool is rotated?

  2. A.
    Vertical boring machine
    B.
    Horizontal boring machine
    C.
    Precision boring machine
    D.
    Jig boring machine

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  3. The ratio between two consecutive spindle speeds for a six-speed drilling machine using drills of diameter 6.25 to 25 mm size and at a cutting velocity of 18 m/min is

  4. A.
    1.02
    B.
    1.32
    C.
    1.66
    D.
    1.82

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  5. The cutting speed of a drill depends upon the

  6. A.
    material of drill
    B.
    type of material to be drilled
    C.
    quality of surface finish desired
    D.
    all of these

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  7. The part of the tool on which cutting edge is formed is called nose.

  8. A.
    Correct
    B.
    Incorrect

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  9. The chamfering is an essential operation after

  10. A.
    knurling
    B.
    rough turning
    C.
    boring
    D.
    thread cutting

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  11. The broaching operation in which either the work or the tool moves across the other, is known as

  12. A.
    pull broaching
    B.
    push broaching
    C.
    surface broaching
    D.
    continuous broaching

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  13. Ultra-sonic machining is best suited for

  14. A.
    tool steels
    B.
    sintered carbides
    C.
    glass
    D.
    all of these

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  15. In plunge grinding

  16. A.
    the work is reciprocated as the wheel feeds to produce cylinders longer than the width of wheel face
    B.
    the work rotates in a fixed position as the wheel feeds to produce cylinders equal to or shorter than the width of wheel face
    C.
    the work is reciprocated as the wheel feeds to produce cylinders shorter than the width of wheel face
    D.
    the work rotates in a fixed position as the wheel feeds to produce cylinders longer than the width of wheel face

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  17. When the grinding wheel is marked by the letters from I to P, it indicates that the grinding wheel is of hard grade.

  18. A.
    True
    B.
    False

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  19. A 15 mm drilling machine means that it can drill a hole

  20. A.
    of maximum diameter 15 mm
    B.
    in 15 mm thick plates
    C.
    having cross-sectional area of 15 mm2
    D.
    none of these

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