If ? is switch angle and R is radius of the turnout, the length of the tongue rail, is
A)R sin ?
B)R tan ?
C)R sin ?/2
D)R tan ?/2

Question

Quizplus · Accepted Answer

The length of the tongue rail in a turnout is determined by the geometry of the turnout, specifically the switch angle. The formula R tan ?/2 is used to calculate the length of the tongue rail, where R is the radius of the turnout and ? is the switch angle.

If ? Is Switch Angle and R Is Radius of the Turnout