Write down the components of railway infrastructure by explaining the functions of each. (7p) Explain the monitoring and measurement activities that are performed for the maintenance of the railways. (8p) 2. What type of data is needed for the geometric design of a railway? Write down the main principles taken into consideration for the railway route investigation. (15p) 3. The traction force-velocity diagram is given for a Bo-Bo locomotive having an axle load of 1.4t. The running resistance is wo = 2 +100 kg/t. Z(kg) 4000 3.1 Calculate the wagon load in tones which can be pulled by the locomotive at a speed of 80 km/h and on a gradient of 18%. (5p) 3.2. Determine the time and distance needed for this locomotive carrying 2CDt of wagon load on a (uphill) gradient of 14% to reach 100 km/h from 0 km/h by using AV 70 km/h speed intervals by considering transition speed and traction zones. 1/p-1000(1+5g = 103 (10p) 25000 21400 Za-90V + 25000 40 ZbV-400V +35800 V(km/h) 120 4. Elevations of Stations I, II and III are +104Bm, +9CDm and +114Dm respectively. The distance between Stations I and II is 10km and the distance between Stations II and III is 12km. Ckm-length tunnel is placed between Stations I and II, and Bkm-length curves with 2100m radius are placed between Stations II and III. The tunnel resistance is 2kg/t, curve resistance is 700/R kg/t and running resistance is = 3 + (kg/t. 4.1. Draw the railway track profile schematically and calculate the gradient in the tunnel. (10p) 4.2. Analyze whether the gradient applied on the curve sections has negative gradient or not for a train having a regime speed of 160 km/h. (5p) 5. On a conventional railway line passenger and freight trains are being operated on the same railway track. The speed of the passenger trains is 24Bkm/h and the speed of the freight trains is 9Ckm/h. The curve radius is 2000m and the applied cant is ID0mm for this railway track. 5.1. Evaluate either for passenger or freight trains, whether the applied cant is excess or deficient. (Sp) 5.2. If the passenger train weight is 1200t, determine the uncompensated force which will act on the train along the curve. (5p) 5.3. The gradient of the transition curve is 0.0005. Calculate the length of the transition curve and write its equation. (5p) 5.4. If the freight train weight is 2500t, calculate the uncompensated force which will act to the train at the beginning of the transition curve. (5p) 6. Passenger and freight trains are operated between stations I and II where the distance between stations is 2.4km. The speed of the passenger trains is 100km/h and the speed of the freight trains is 60km/h for a single line railway track. The waiting time for passenger trains is 1.B min. and ID min. for freight trains. It is possible to operate 2C freight trains/day and the daily operation time is 21 hours. 6.1. Calculate the number of passenger trains that will be operated daily per direction. (10p) 6.2. If the speed of the passenger trains increased 30%, determine the amount of increase in the number of passenger trains that will be operated daily per direction. (10p)