Railway Engineering
Cant deficiency occurs when a vehicle travels around a curve at

Equilibrium speed
Speeds higher than equilibrium speed
Booked speed
Speeds lower than equilibrium speed

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Railway Engineering
A triangle is used for

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

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