Railway Engineering
Heel divergence is

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

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

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