Match the following:

S.No. Important terms in a turnout S.No. Definition

A Lead of crossing 1
Distance from the tangent point (T) to the heel of the switch (TL)

B Switch lead 2
Distance from the tangent point (T) to the theoretical nose of crossing (TNC)

C Curve lead 3
Distance between the gauge faces of the stock rail and the tongue rail at the heel of the switch

D
Heel divergence
4
Distance between the theoretical nose of crossing (TNC) and heel of the switch (TL)

Question

S.No.	Important terms in a turnout	S.No.	Definition
A	Lead of crossing	1	Distance from the tangent point (T) to the heel of the switch (TL)
B	Switch lead	2	Distance from the tangent point (T) to the theoretical nose of crossing (TNC)
C	Curve lead	3	Distance between the gauge faces of the stock rail and the tongue rail at the heel of the switch
D	Heel divergence	4	Distance between the theoretical nose of crossing (TNC) and heel of the switch (TL)