Forums Assignment Help A train stops when the chain is pulled. Why ?

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  • #280
    Aakanksha
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    A train stops when the chain is pulled. Why ?

    #8842
    Aakanksha
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    Ans. When the chain is pulled, one small valve gets opened and air/atmospheric pressure is admitted to the under side of the piston head of the brake cylinder through pipe connections. Initially there is vacuum on both top and bottom side of the piston head. When the air/atmospheric pressure enters the under side of the piston head, the piston raises up due to difference of pressure and pulls the brake rigging to which it is connected with links and levers. Thus the brakes are applied and the train stops.

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