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

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

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

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