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If ? is the switch angle and R is the radius of the turn out, the length of tongue rail will be

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Question:

If ? is the switch angle and R is the radius of the turn out, the length of tongue rail will be

A.

R tan ?

B.

R tan ? / 2

C.

R cot ?

D.

R cot ? / 2

Answer» b. R tan ? / 2

Note: The above multiple-choice question is for all general and Competitive Exams in India.