Q
Stretcher bar is provided________________?
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A
A. To permit lateral movement of the tongue rail
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B
B. To maintain the two tongue rails at the exact distance
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C
C. To ensure exact gauge at the toe of the switch as well as the nose of crossing
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D
D. To prevent any vertical movement between the wing rail and nose of crossing
Correct Answer:
B. B. To maintain the two tongue rails at the exact distance
