This set of Railway Engineering Multiple Choice Questions & Answers (MCQs) focuses on “Other Defects in Rails”.
1. What can be done to prevent Hogging of rails?
a) Tilting of rails
b) Shovel packing
c) Scabbing of rails
d) Interchanging rails
View Answer
Explanation: Hogging of rail can happen because of poor maintenance, faulty fastenings, etc. It can be prevented by measured shovel packing.
2. In which type of defect patches of metal fall from the rail table?
a) Scabbing of rails
b) Hogging of rails
c) Wheel burns
d) Corrugation of rails
View Answer
Explanation: A metal chunk generally falls from the rail in case of scabbing of rails. An elliptical depression is created with cracks surrounding it.
3. What causes wheel burns?
a) Slipping of wheel on rail surface
b) Falling of metal chunks
c) Manufacturing defects
d) High speed
View Answer
Explanation: Slipping of wheel of locomotive on rail causes generation of extra heat. This affects the rail surface and a depression on the rail surface is created leading to wheel burns.
4. Which of the following locations are less likely to develop wheel burns?
a) Steep gradients
b) Heavy braking incidences
c) Near water columns
d) On flat gradient
View Answer
Explanation: Wheel burns are generally found on steep gradients because there is less chance of slipping of wheels on flat gradients. Sometimes, more heat is generated in braking operations and leads to wheel burns.
5. Which of the following defects occur because of heavy bearing pressure on small area of contact?
a) Shelling and Black spots
b) Scabbing of wheels
c) Hogging of wheels
d) Corrugation of wheels
View Answer
Explanation: Huge internal stresses are produced because of heavy pressure on small area. This causes horizontal separation of metal. This defect is called as Shelling and black spots.
6. When vehicles pass over corrugated rails, a roaring sound is produced.
a) True
b) False
View Answer
Explanation: Locking of air takes place when vehicles pass over corrugated rails. This produces a sound similar to roaring and is called Roaring of rails.
7. What can be done for removing Corrugation?
a) Grinding the rail head
b) Shovel packing
c) Tilting of rails
d) Scabbing of rails
View Answer
Explanation: Corrugation causes wear of rails, disrupts the packing and results in rapid oscillation of rails. It can be removed by grinding the rail by fraction of a millimetre.
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