Weight
Multiple Choice
(Each question in this group contains one and only one correct answer.)
3
15. To prevent a cut of cars descending on a spur toward a main line from colliding with a
through train, a _______________ is installed.
A.
Derail.
B.
Track crossing.
C.
Slip switch.
D.
Spring switch.
3
16. "Puzzle switch" is a popular name for a _____________________ switch.
A.
Split-point.
B.
Slip.
C.
Spring.
D.
Stub.
3
17. When other types of track bumpers are unobtainable, you may use __________________ as
an expedient.
A.
Magnetic switches.
B.
Manganese frogs.
C.
Timbers.
D.
Sawhorses.
3
18. Switch plates are used under switch rails instead of ________________________ plates.
A.
Magnetic.
B.
Spring.
C.
Tie.
D.
Planed.
3
19. A No. 20 frog is used in a certain turnout. The distance between the theoretical and actual
points of the frog is _____________________ inches.
A.
20.
B.
15.
C.
10.
D.
5.
15
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