> 00000CE407121901 Pages: 2

Reg No.: Name:
APJ ABDUL KALAM TECHNOLOGICAL UNIVERSITY

Seventh semester B.Tech examinations (S), September 2020

Course Code: CE407
Course Name: TRANSPORTATION ENGINEERING - II

Max. Marks: 100 Duration: 3 Hours
PARTA
Answer any two full questions, each carries 15 marks. Marks
1 a) Enumerate the role of Indian Railways in National development. (5)

‎A 6° curve diverges from a 4° main curve in reverse direction in the layout of a (10)‏ زا
‎B.G. track. Speed on branch line is restricted to 35 kmph. Determine the restricted‏
‎speed on main line.‏
‎a) If the ruling gradient is 1 in 150 on a particular section of Broad Gauge track and (5)‏ 2
‎at the same time a curve of 4 degree is situated on this ruling gradient, what‏

‎should be the allowable ruling gradient?

‎b) List out any four different urban rail-transits in India. What are tube-railways? (5)
c) Sketch the typical cross-section of a railway track (5)
3 a) What 15 coning of wheels? Why is it necessary? (5)
b) Discuss wave theory and percussion theory with respect to creep of rails. (5)

‎c) Discuss any five factors affecting the selection of a good alignment of a railway (5)
track.
PART B
Answer any two full questions, each carries 15 marks.
4 a) Explain about any four advanced technical remedial aids or measures for (8)
prevention of railway accidents.

‎0) On a straight B.G. track, a turnout takes off at an angle of 6°42 35 . Design the (7)
turnout if angle of switch is equal 10 118 00 , length of switch rails is 4.73 m, heel
divergence is equal to 11.43 cm and straight arm is equal to 0.85 m.

‎5 a) Discuss about the maintenance and renewal of rails, sleepers and track fittings. (8)

‎b) List out the different types of functional signals. Discuss in detail the working of (7)

‎any one signal with neat sketch.

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