duration 1:27:29 wrong definition of switch lead Switch lead (SL)- This is the distance from the tangent point (T) to the heel of the switch (TL) measured along the length of the main track CURVE LEAD = The distance from the tangent point (T) to the theoretical nose of crossing (TNC) measured along the main track's length LEAD OF CROSSING = CL - SL
India has two different narrow gauge systems, 2 ft 6 in (762 mm) and 2 ft (610 mm). Narrow gauge lines were also constructed for cost considerations, and because simpler engineering permitting sharp turns in hilly regions.
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duration 1:27:29 wrong definition of switch lead
Switch lead (SL)- This is the distance from the tangent point (T) to the heel of the switch (TL) measured along the length of the main track
CURVE LEAD = The distance from the tangent point (T) to the theoretical nose of crossing (TNC) measured along the main track's length
LEAD OF CROSSING = CL - SL
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Sir, Hilly areas ma narrow gauge he q use karta hai.
India has two different narrow gauge systems, 2 ft 6 in (762 mm) and 2 ft (610 mm). Narrow gauge lines were also constructed for cost considerations, and because simpler engineering permitting sharp turns in hilly regions.
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