D G193008 Pages:2

Reg No.:_ Name:
APJ ABDUL KALAM TECHNOLOGICAL UNIVERSITY
SEVENTH SEMESTER B.TECH DEGREE EXAMINATION(R&S), MARCH 2020

Course Code: CE407
Course Name: TRANSPORTATION ENGINEERING - 11

Max. Marks: 100 Duration: 3 Hours
PARTA
Answer any two full questions, each carries 15 marks. Marks
1 a) What are the modern developments in Railways (8)

b) Explain track-alignment? What are the factors which control the alignment of ೩ (7)
railway track?
2 a) Write the different types of rail section. Mention relative merits and demerits of (5)
flat footed rails and bull headed rails.
b) What should be the actual ruling gradient if the ruling gradient is 1 in 130 ona (5)
MG and a curve of 4 degree is super imposed on above track section?
c) Explain in brief LRT and MRTS. (5)
3 ஐ Froma BG yard an 6° curve branches off from a 3° main curve. If the speed is (8)
restricted to 35 km/h in the branch line and the permissible value of cant
deficiency is 75 mm, determine the speed restriction on the main line.
c) What is creep? What are the causes and effects of creep? (7)
PART 13
Answer any two full questions, each carries 15 marks.
4 a) A turnout is to be laid off a straight BG track with a 1 in 12 crossing. Determine (8)
the lead and radius of turnout with the help of following data:
heel divergence = 133mm, crossing angle 4°45’49”, switch angle 1°8’0”, straight
length between the theoretical nose of crossing and tangent point of
crossing = 1.418m.
b) Explain the procedure of ‘Through packing’ and ‘Scissor packing’ and highlight (7)
the difference between them.
5 a) Describe the various possible causes which may result into a railway accident and (8)
suggest the possible remedies for each
0) What are the different systems of controlling the movement of trains? Explain the (7)

working of one system which has been widely used on Indian Railways.

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