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    ​A gear train comprises of 4 spur gears – the driven gear G₁, two idlers G₂, G₃ and the driving gear G₄. The radii of G₁, G₂, G₃ and G₄ are r, r/2, r/
    Question

    ​A gear train comprises of 4 spur gears – the driven gear G₁, two idlers G₂, G₃ and the driving gear G₄. The radii of G₁, G₂, G₃ and G₄ are r, r/2, r/3 and 2r, respectively. What is the ratio of angular velocities of G₁ to G₄ and their direction of rotation? ​

    A.

    Ratio = 1, opposite direction

    B.

    Ratio = 1/6, same direction

    C.

    Ratio = 2, Opposite direction

    D.

    Ratio = 1/2, same direction

    Correct option is C

    ​​​​

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