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A. It is proposed to haul trains of 6000t gross tonnage with 2 locos, each 116t

ID: 1712562 • Letter: A

Question

A. It is proposed to haul trains of 6000t gross tonnage with 2 locos, each 116t and rated at 2475 kW. Two routes are available: a) 15 km long, straight, on a uniform grade of 1 in 375. b) 16.7 km long, on uniform 1 in 600 upgrade, contains curves 950 m radius, most of the length Check which route is cheaper in power consumption if the mean speed is to be 50km/h B. What is the maximum mass of the train where locomotive weighing 120 tonnes, rated power 5000 KW, can pull up a gradient of0.1 75% and including 1200 m radius curve, at 50 km/h of a constant speed, on continuously rail track.

Explanation / Answer

Hi,

Hope it helps.

The frst route is having lesser distance and the slope is also uniform as compared to the second. As in second route the slope is more as compared to first route, which gives a clear idea that the force and in turn power will be required more for the second route.

Thus, route 1 is more cheaper.

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