Railway Engineering
The following tests are conducted for rails:i) falling weight testii) tensile testiii) hammer testThe compulsory tests are

(i) and (iii)
(ii) and (iii)
only (i)
(i)and(ii)

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Railway Engineering
Lead of crossing is the distance from the

toe of the switch to the theoretical nose of crossing
heel of the switch to the toe of the switch
toe of the switch to the actual nose of crossing
heel of the switch to the theoretical nose of the crossing

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