Weight
C. 6.
D. 7.
3
26. Yard turnouts are usually sharp because of the:
A.
Interlocking system.
B.
Space restrictions.
C.
Puzzle switches needed.
D.
Height limitations.
3
27. What is the minimum frog number and minimum length switch rails which could be used in
a turnout designed for speeds of 35 miles an hour?
A.
Frog No. 20, switch rail length 30 feet.
B.
Frog No. 10, switch rail length 20 feet.
C.
Frog No. 8, switch rail length 18 feet.
D.
Frog No. 8, switch rail length 20 feet.
17
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