CE1356 Railway Engineering B.E Question Bank : kings.ac.in

Name of the College : Kings College of Engineering
University : Anna University Chennai
Department : Civil Engineering
Subject Code/Name : CE1356 – Railway Engineering
Year : III
Semester : VI
Degree : B.E
Website : kings.ac.in
Document Type : Question Bank

Download :https://www.pdfquestion.in/uploads/ki…NGINEERING.pdf

Kings Railway Engineering Question Paper

Unit I

Introduction :
Part- A :
1. What is meant by zonal railways? :
The entire railway station has been divided into nine zonal railways having different territorial jurisdictions which are responsible for all management and planning of works.

Related : Kings College of Engineering EE1152 Electric Circuits & Electron Devices B.E Question Bank : www.pdfquestion.in/1556.html

2. Mention some advantages of railways.
The various advantages of railways may be as follows :
a) It aids in the mass migration of people.
b) Trade development has increased ten folds after the growth of railways.
c) Land values have increased due to increased industrial growth. d) Speedy distribution of finished product is achieved through railways.

3. What do you understand by the term “Buckling of rails”? :
The railway track gets out of the original position due to the buckling if the expansion of rails is prevented during hot weather. Such an action is known as “buckling of rails”.

4. What do you understand by the term “Ballast”? :
Ballast is the granular material packed under and around the sleeper to transfer loads from sleeper to ballast. It helps in providing elasticity to the truck.

5. What are the different types of gauges? :
The different types of gauges are as follows :
a) Broad Gauge (B.G.) – 1.67 mtrs.
b) Meter Gauge (M.G.) – 1.00 mtrs.
c) Narrow Gauge (N.G.) – 0.762 mtrs.
d) Light Gauge or Freeder Track Gauge –0.610 mtrs.

6. Enumerate the various factors that govern the selection of various types of gauges.
There are numerous factors that are dependant in the selection of different gauges. However, few of them are mentioned below :
a) Cost of Construction
b) Volume and nature of traffic
c) Development of the areas
d) Physical features of the country
e) Speed of movement

7. What are the advantages of “Coning of wheels”? :
The various advantages of coning of wheels are :
a) To reduce the wear and tear of the wheel flanges and rails due to rubbing action of flanges with the inside faces of the rail head.
b) To provide a possibility of lateral movement of axil to the wheels.
c) To restrict the wheels from slipping.

8. Define “Track modulus”.
Track modulus is an index for stiffness of track. It is defined as load per unit length of the rail required to produce a unit depression in the track.

9. List down the various causes of “Track stresses”.
Stresses in the railway track are produced due to many causes as listed below:
a) Wheel loads
b) Dynamic effect of wheel loads
c) Hammer blow
d) Horizontal thrust

10. What is a “Sleeper”? :
A sleeper is a member laid transversely under the rails which are meant to support the rails over them and transfer the load from rails to ballast.

11. What are the functions of a “sleeper”? :
Sleepers perform the following functions :
a) To distribute the load from the rails to the index area of ballast underlying it or to the girders in case of bridges.
b) They add to the lateral and longitudinal stability of the permanent track to support the rails at a proper level in straight tracks and at proper super elevation on curves.
c) To hold the rails to correct gauge.
d) To act as an elastic medium in between the ballast and rails to absorb the vibrations of moving loads.

12. What are the different types of sleepers? :
Sleepers are classified into the following categories :
i. Wooden sleepers
ii. Metal sleepers
a) Cast Iron Sleepers
b) Steel sleepers
iii. Concrete Sleepers
a) Reinforced Concrete sleepers
b) Pre-stressed Concrete Sleepers

13. What do you understand by the term “Fish Plates” and what are its uses?:
Fish plates are used in rail joints to maintain the continuity of rails and to permit any expansion or contraction of the rail due to thermal variations. They maintain the correct alignment of the line both horizontally and vertically.

14. What are the different types of “Ballast”? :
The different materials that are used vary from broken stone to sometimes earth. A few commonly used types of ballast are the following :
a) Broken stone
b) Gravel or shingles
c) Ashes or cinders
d) Moorum
e) Blast furnace slag
f) Kankar

UNIT-II

Track Alignment :
PART- A :
1. What are the objectives of “Reconnaissance Survey”?
The objectives of Reconnaissance Survey are as follows:
a) To decide maximum grading and curvature for proposed alignment
b) To locate various control points for getting an idea from where the alignment should pass and where the alignment should not.
c) To have an idea about possible alternative alignments
d) To prepare rough estimates for different proposed alignment to know most economical, efficient and safe alignment.

2. What are the uses of instruments used in preliminary survey?
The various instruments used in preliminary survey are :
a) Theodolite – for traversing
b) Tacheometer – for plotting main features
c) Dumpy level – for drawing the longitudinal crosssections
d) Plain Table – for plotting interior details
e) Prismatic Compass – for magnetic bearings of routes and main points.

3 Write a small note on the need of construction of a new railway line.
(1) Strategic reasons
(2) Connecting trade centers
(3) Developing a backward area
(4) Shortening the existing route

4 List the factors influencing the selection of a good railway track alignment.
For selection of a good alignment , the following factors are generally considered :
Obligatory points
Type of traffic
Gauge of the track
Geometric standards
Topography of the country
Economic considerations

5. Write the requirements of a good rail alignment.
(1) Purpose of the track
(2) Feasibility
(3) Economy
(4) Safety
(5) Aesthetic aspects