Machine Design Miscellaneous


  1. Modern gear tooth profile is given involute shape because









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    NA

    Correct Option: D

    NA


  1. For full depth of involute spur gears, minimum number of teeth of pinion to avoid interference depends upon









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    NA

    Correct Option: A

    NA



  1. For full depth of involute spur gears, minimum number of teeth of pinion to avoid interference depends upon









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    NA

    Correct Option: A

    NA


  1. The basic load rating of a ball bearing is









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    NA

    Correct Option: B

    NA



  1. The dynamic load capacity of 6306 bearing is 22 kN. The maximum radial load it can sustain to operate at 600 rev/min, for 2000 hours is









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    Number of revolutions in life = 2000 × 60 × 600
    = 72 × 105 revolutions
    ∴  L = 72

    Maximum radial load =
    2 2
    =
    2 2
    ³√L³√7 2

    = 5.29 kN

    Correct Option: D

    Number of revolutions in life = 2000 × 60 × 600
    = 72 × 105 revolutions
    ∴  L = 72

    Maximum radial load =
    2 2
    =
    2 2
    ³√L³√7 2

    = 5.29 kN