Railway Engineering
In a scissors cross-over, the crossings provided are
i) 2 obtuse angle crossings
ii) 4 obtuse angle crossings
iii) 4 acute angle crossings
iv) 6 acute angle crossings
The correct answer is

(ii) and (iv)
(i)and(iv)
(ii) and (iii)
(i) and (iii)

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Railway Engineering
The treadle bar is provided

near and parallel to inner side of both the rails
near and parallel to inner side of one of the rails
in the middle of the track a little in front of the toes of the tongue rail
at right angle to the rail

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