Railway Engineering
Which of the following factors govern the choice of the gauge ? i) volume and nature of traffic ii) speed of train iii) physical features of the country The correct answer is

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

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Railway Engineering
A triangle is used for

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

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