Enrolment No.
- SEMESTER-VI(NEW) - EXAMINATION - SUMMER 2019
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Subject Code:2160603 Date:16/05/2019
Subject Name:Railway, Bridge & Tunnel Engineering
Time:10:30 AM TO 01:00 PM Total Marks: 70
Instructions:
- Attempt all questions.
- Make suitable assumptions wherever necessary.
- Figures to the right indicate full marks.
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Q.1
(a) Enlist the component parts of a permanent way. 03
(b) Explain the conning of wheels with neat sketch. 04
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(c) Discuss the systems of Railways in brief. 07
Q.2
(a) Draw a sketch of turnout and explain its components. 03
(b) Describe the various measures to be taken for preventing railway accidents. 04
(c) Define cant deficiency. What would be the permissible speed on the curve? If 07 on a 8 degree M.G. track, the average speed of different trains is 50 kmph and allowable cant deficiency is half that of maximum cant deficiency.
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OR
(c) Define super-elevation. A 5 degree curve diverges from a main curve of 4 degree 07 in an opposite direction in the layout of a broad gauge yard. If the speed on the main curve is restricted to 56 kmph, determine the speed restriction on the branch line. Assume permissible cant deficiency as 7.5 cm.
Q.3
(a) Draw sketch of pandrol clip and fish plate. Suggest need of both. 03
(b) Discuss specification of Track ballast. 04
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(c) Define the creep of rail & state the effects of creep. 07
OR
Q.3
(a) Find out the expression for sleeper density for a B.G. Track if 19 sleepers are 03 used under a rail length.
(b) Write a short note on ‘Diamond Interchange’ with the sketch. 04
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(c) What do you understand by mountain railways? Describe in brief the various 07 types of alignments used for mountain railways.
Q.4
(a) Enlist the factors which you keep in mind during the selection of an appropriate 03 site for the bridge as an engineer.
(b) Discuss components of bridges with neat sketch. 04
(c) Write types and function of bearing. Explain rocker and roller bearing. 07
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OR
Q.4
(a) Write a short note on Economic Span of the bridge. 03
(b) Write a short note on Suspension bridge. 04
(c) What are the objectives of signaling and interlocking in railway? Discuss with 07 sketches of different types of signals used in railway.
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Q.5
(a) Give advantages of the shaft. 03
(b) Write safety precautions in tunnel construction. 04
(c) Under which circumstances do you prefer Tunneling? Classify the tunnels 07 according to their shape and size. Explain with sketch any two of them.
OR
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Q.5
(a) Draw sketch of different shapes of the tunnel. 03
(b) Explain cut water & ease water. 04
(c) Explain various methods of tunnel ventilation. 07
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