Railway Engineering
Consider the following statements: Automatic signalling system results in 1. greater risk 2. higher efficiency 3. avoidance of block instruments 4. higher operating cost Of these statements

3 and 4 are correct
2 and 3 are correct
1 and 4 are correct
I and 2 are correct

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Railway Engineering
Flange-way clearance is the distance

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

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