CL = L - SL

L =CL-SL

SL = L + CL

L = (CL+SL)/2

(i) and (iii)

(i)and(iv)

(ii) and (iii)

(ii) and (iv)

flangeway clearance

heel divergence

throw of the switch

none of the above

between the adjoining faces of the running rail and the check rail near the crossing

between the gauge faces of the stock rail and the tongue rail

through which the tongue rail moves laterally at the toe of the switch

none of the above

always less than flangeway clearance

equal to flangeway clearance

always greater than flangeway clearance

sometimes greater than flangeway clearance