Railway Engineering
Switch angle is the angle between

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

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Railway Engineering
On a single rail track, goods trains loaded with heavy iron material run starting from ‘A’ to ‘B’ and then empty wagons run from ‘B’ to ‘A’. The amount of creep in the rails:

Will be more in the direction of A to B
Will be maximum at the middle of A and B
Will be more in the direction of B to A
Cannot be determined from the given data

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