Railway Engineering
The distance through which the tongue rail moves laterally at the toe of the switch for movement of trains is called

heel divergence
flangeway clearance
throw of the switch
None of these

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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
Changing the direction of engine
Preventing the vehicles from running off the track

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