Railway Engineering
Due to battering action of wheels over the end of the rails, the rails get bent down and are deflected at ends. These rails are called

Buckled rails
Corrugated rails
Roaring rails
Hogged rails

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Railway Engineering
Switch angle is the angle between

the outer face of the stock rail and tongue rail
the gauge face of the stock rail and outer face of the tongue rail
the gauge face of the stock rail and tongue rail
the outer face of the stock rail and the gauge face of the tongue rail

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