Railway Engineering
The main function of a fish plate is

None of these
To join the two rails together
To join rails with the sleeper
To allow rail to expand and contract freely

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Railway Engineering
Switch angle is the angle between

the outer face of the stock rail and the gauge face of the tongue rail
the gauge face of the stock rail and tongue rail
the outer face of the stock rail and tongue rail
the gauge face of the stock rail and outer face of the tongue rail

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Railway Engineering
A triangle is used for

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

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