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

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

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Railway Engineering
Heel divergence is

Always less than flange-way clearance
Equal to flange-way clearance
Always greater than flange-way clearance
Sometimes greater than flange-way clearance

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Railway Engineering
The treadle bar is provided

near and parallel to inner side of one of the rails
in the middle of the track a little in front of the toes of the tongue rail
at right angle to the rail
near and parallel to inner side of both the rails

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