Railway Engineering Questions and Answers – Ballast – Functions and sizes


This set of Railway Engineering Multiple Choice Questions & Answers (MCQs) focuses on “Ballast – Functions and sizes”.

1. Which of the following is not a function of Ballast?
a) Providing a bed for sleepers
b) Holding sleepers in position
c) Providing effective drainage
d) Providing resistance to wheels
View Answer

Answer: d
Explanation: The ballast provides resistance to the track and not wheels for proper stability. It should provide effective drainage, proper bed for sleepers and hols the sleepers in position.

2. Which element transfers its load directly to the Ballast?
a) Sleepers
b) Wheels
c) Locomotive
d) Formation
View Answer

Answer: a
Explanation: The sleepers transfer the load imposed on it directly to the ballast. The Ballast which in turn transfers it to the formation and thus works efficiently.

3. The ballast provides stiffness to the track.
a) True
b) False
View Answer

Answer: b
Explanation: The ballast provides elasticity to the track. This maintains comfortable conditions for the passengers during movement of the train especially while moving on curves.
Sanfoundry Certification Contest of the Month is Live. 100+ Subjects. Participate Now!

4. Previously which of the following ballast was used for flat bottom sleepers?
a) 50mm
b) 36mm
c) 25mm
d) 74mm
View Answer

Answer: a
Explanation: Earlier 50mm (2”) ballast was used for concrete and wooden sleepers. 40mm (1.5”) ballast was used for metal sleepers. Now to ensure uniformity 50mm ballast are used on all types of sleepers.

5. Which of the following ballast is used at points and crossings?
a) 50mm
b) 40mm
c) 25mm
d) 72mm
View Answer

Answer: c
Explanation: At points and crossings small sized ballast is used because of its fineness for slight adjustments. Thus 25mm (1”) ballast is used.

Sanfoundry Global Education & Learning Series – Railway Engineering.

To practice all areas of Railway Engineering, here is complete set of 1000+ Multiple Choice Questions and Answers.


Subscribe to our Newsletters (Subject-wise). Participate in the Sanfoundry Certification contest to get free Certificate of Merit. Join our social networks below and stay updated with latest contests, videos, internships and jobs!

Youtube | Telegram | LinkedIn | Instagram | Facebook | Twitter | Pinterest
Manish Bhojasia - Founder & CTO at Sanfoundry
Manish Bhojasia, a technology veteran with 20+ years @ Cisco & Wipro, is Founder and CTO at Sanfoundry. He lives in Bangalore, and focuses on development of Linux Kernel, SAN Technologies, Advanced C, Data Structures & Alogrithms. Stay connected with him at LinkedIn.

Subscribe to his free Masterclasses at Youtube & technical discussions at Telegram SanfoundryClasses.