Railway Engineering
Which of the following devices is used to transfer the wagons or locomotives to and from parallel tracks without any necessity of shunting ?

scotch block
traverser
turntable
triangle

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Railway Engineering
A triangle is used for

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

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