This set of Railway Engineering Multiple Choice Questions & Answers (MCQs) focuses on “Effects and Measurement of Creep”.
1. What is the major effect of sleepers coming out of square due to creep?
a) Unpleasant rides
b) Increased stresses
c) More expansion
d) Less load
Explanation: Because of creep sleepers come out of square. This results in effect on the gauge and alignment of the track. This leads to unpleasant rides.
2. What is the effect of creep on expansion gaps?
a) They get widen at all places
b) They get close at all places
c) They get widen at some and close at other places
d) They are not affected due to creep
Explanation: Because of creep, the expansion joints get close at some places and widen at others. The joints thus get jammed and huge stresses are developed in fish plates and bolts.
3. Which of the following is wrong regarding the effect of Creep?
a) Interlocking gets disturbed
b) Possibility of Buckling
c) Eases the changing of rails
d) Sleepers move out of square
Explanation: Excessive creep makes the changing of rail very difficult. This happens because the new rail is found to be either too long or too short because of creep.
4. Which of the following device is used for the measurement of creep?
a) Creep measurer
b) Creep indicator
c) Rail Creep finder
d) Creep posts
Explanation: For measurement of creep a device called Creep indicator is used. It has two creep posts. Creep posts are generally rail pieces used on either side of the track.
5. The top level of creep post is generally at what level as compared to the rail level?
a) About half the height of rail
b) Same as the rail level
c) 2 inches higher than the rail level
d) 2 inches lower than the rail level
Explanation: The top level of creep post is same as that of the rail level. This ensures ease in measurement of creep which is done using a fishing string.
6. What is the maximum value of creep permissible in any track?
Explanation: Any track should not have creep more than 150mm (6 inches). But in case of tracks approaching points and crossings there should be no creep.
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