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

corrugation of rails
scabbing of rails
wheel burns
hogging of rails

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Railway Engineering
Switch angle is the angle between

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

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Railway Engineering
Heel divergence is

Always less than flange-way clearance
Always greater than flange-way clearance
Sometimes greater than flange-way clearance
Equal to flange-way clearance

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Railway Engineering
Flange-way clearance is the distance

Through which the tongue rail moves laterally at the toe of the switch
Between the gauge faces of the stock rail and the tongue rail
Between the adjoining faces of the running rail and the check rail near the crossing
None of these

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