Maximum Speed while running through over 1 in 8 ½ turnout with curved switch is ________kmph.
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A.
10 kmph.
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B.
15 kmph.
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C.
20 kmph.
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D.
30 kmph.
Correct Answer:
B. 15 kmph.
Explanation:
On Indian Railways, speed limits on turnouts are determined by the geometry of the crossing and the type of switch used. While standard 1 in 8.5 turnouts are generally restricted to lower speeds (typically 10-15 kmph), the use of curved switches improves the entry transition and allows for higher permissible speeds. According to standard railway engineering specifications and safety guidelines, a 1 in 8.5 turnout equipped with a curved switch allows for a maximum speed of 20 kmph. This design reduces the lateral thrust and impact at the entry point compared to traditional straight switches, facilitating a safer and slightly faster movement through the diverging track.
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