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Mechanical Engineering :: Production Engineering

  1. Dielectric is used in

  2. A.
    electro-chemical machining
    B.
    ultra-sonic machining
    C.
    electro-discharge machining
    D.
    laser machining

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  3. The type of reamer used for reaming soft aluminium or copper, is

  4. A.
    straight fluted reamer
    B.
    left hand spiral fluted reamer
    C.
    right hand spiral fluted reamer
    D.
    any one of these

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  5. The tool material, for faster machining, should have

  6. A.
    wear resistance
    B.
    red hardness
    C.
    toughness
    D.
    all of these

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  7. The helix angle of a drill is more than 30° for drilling aluminium.

  8. A.
    Agree
    B.
    Disagree

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  9. In a single point turning operation with a cemented carbide and steel combination having a Taylor exponent of 0.25, if the cutting speed is halved, then tool life will become

  10. A.
    half
    B.
    two times
    C.
    eight times
    D.
    sixteen times

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  11. An open structure of a grinding wheel is used for

  12. A.
    soft materials
    B.
    tough materials
    C.
    ductile materials
    D.
    all of these

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  13. A twist drill is specified by its

  14. A.
    shank, material and diameter
    B.
    shank, lip angle and size of flute
    C.
    material, length of body and helix angle
    D.
    any one of these

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  15. The hole to be drilled for tapping is __________ the outside diameter of the thread on the tap.

  16. A.
    equal to
    B.
    smaller than
    C.
    greater than

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  17. Glazing in grinding wheels takes place when the

  18. A.
    wheel is too hard or wheel revolves at a very high speed
    B.
    wheel is too soft or wheel revolves at a very slow speed
    C.
    wheel is too hard and wheel revolves at very slow speed
    D.
    wheel is too soft and wheel revolves at a very high speed

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  19. Low helix angle drills are preferred for drilling holes in

  20. A.
    plastics
    B.
    copper
    C.
    cast steel
    D.
    carbon steel

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