Railway Engineering
The main function of a fish plate is

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

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Railway Engineering
Flange-way clearance is the distance

Through which the tongue rail moves laterally at the toe of the switch
Between the gauge faces of the stock rail and the tongue rail
None of these
Between the adjoining faces of the running rail and the check rail near the crossing

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Railway Engineering
Switch angle is the angle between

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

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