GTU BE/B.Tech 2018 Winter Question Papers || Gujarat Technological University
Subject Code: 2160603
GUJARAT TECHNOLOGICAL UNIVERSITY
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BE - SEMESTER-VI (NEW) EXAMINATION - WINTER 2018
Subject Name: Railway, Bridge & Tunnel Engineering
Time: 02:30 PM TO 05:00 PM Date: 27/11/2018 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 different gauges used in India. | 03 |
| (b) Write short note on Mono rails. | 04 | |
| (c) What are the functions of rails? Explain the various types of rails in use. | 07 | |
| Q.2 | (a) Define the following: 1) Ruling gradient ii) Pusher gradient iii) Momentum gradient | 03 |
| (b) Discuss factors affecting site selection of bridge. | 04 | |
| (c) Explain ‘negative super elevation’. State the circumstances under which it is provided. | 07 | |
| OR | ||
| (c) A 5° curve diverges from a main curve of 4° in an opposite direction in the layout of a broad gauge yard. If the speed on the main curve is restricted to 54.33 kmph, determine the speed restriction on the branch line. Assume permissible cant deficiency as 7.5 cm. | 07 | |
| Q.3 | (a) Explain resistance due to friction that locomotive in motion has to overcome. | 03 |
| (b) Explain Track Drainage. | 04 | |
| (c) Draw the neat sketch of simple left hand turnout and show its various component parts. Explain the working principle of the turnout. | 07 | |
| OR | ||
| (a) Give the purpose of railway station. | 03 | |
| (b) Explain causes of rail accidents and their remedial measures in brief. | 04 | |
| (c) What are the facility requirements of railway station? | 07 | |
| Q.4 | (a) Write types and function of bearing. | 03 |
| (b) Discuss stages involved in bridge investigation. | 04 | |
| (c) What is ‘economic span’ of a bridge? Derive the expression for economic span of bridge. | 07 | |
| OR | ||
| (a) Give classification of bridge based on super structure. | 03 | |
| (b) Explain various defects in bridge. | 04 | |
| (c) Write Short note on “maintenance of bridges”. | 07 | |
| Q.5 | (a) Define the terms: 1) Water way ii) Afflux iii) Free board | 03 |
| (b) Discuss the drainage system in tunnel construction. | 04 | |
| (c) Discuss any one method of tunneling in hard rock. | 07 | |
| OR | ||
| (a) Write a short note on Scour depth. | 03 | |
| (b) Write safety precautions in tunnel construction. | 04 | |
| (c) Explain various methods of tunnel ventilation. | 07 | |
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