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| Q. |
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)] |
| B. | d (3r - 2g -d)] |
| C. | d (3r + 2g - d)] |
| D. | d (4 + 2g - d)] |
| Answer» A. d (4r - 2g - d)] | |
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