Railway Engineering
The slipping of driving wheels of locomotives on the rail surface causes

scabbing of rails
hogging of rails
corrugation of rails
wheel burns

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Railway Engineering
Switch angle is the angle between

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

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