Railway Engineering
Number of dog spikes normally used per rail seat on curved track is

one outside and two inside
two outside and two inside
two outside and one inside
one on either side

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Railway Engineering
Flange-way clearance is the distance

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

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