Railway Engineering
Switch angle depends on i) heel divergence ii) length of tongue rail iii) flangeway clearance iv) throw of switch The correct answer is

(i)and(iv)
(iii) and (iv)
(i) and (ii)
(ii) and (iii)

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Railway Engineering
A triangle is used for

Transferring wagons to and from parallel tracks without shunting
Separating all the sidings and shunting lines from main lines
Preventing the vehicles from running off the track
Changing the direction of engine

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