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If D Is Distance Between Centres of Two Parallel Tracks D(4R−2G−D)\sqrt{D (4R - 2G - D)}

Question 22

Multiple Choice

If D is distance between centres of two parallel tracks of gauge G with entire curved leads and equal angles of crossing, total length of crossover, is


A) D(4R−2G−D) \sqrt{D (4R - 2G - D) }
B) D(3R−2G−D) \sqrt{D (3R - 2G -D) }
C) D(3R+2G−D) \sqrt{D (3R + 2G - D) }
D) D(4+2G−D) \sqrt{D (4 + 2G - D) }

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