Railway Engineering
The formation width for a railway track depends on the i) type of gauge ii) number of tracks to be laid side by side iii) slope of sides of embankment or cutting The correct answer is

both (i) and (ii)
only (i)
(i), (ii) and (iii)
both (i) and (iii)

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Railway Engineering
Stretcher bar is provided

To permit lateral movement of the tongue rail
To maintain the two tongue rails at the exact distance
To prevent any vertical movement between the wing rail and nose of crossing
To ensure exact gauge at the toe of the switch as well as the nose of crossing

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