a) Why is a D.C. series motor ideally suited for traction purposes? E…

Previous year question for Utilization of Electrical Energy.

Question

a) Why is a D.C. series motor ideally suited for traction purposes? Explain (8)

b) The distance between two stations is 1.6 km and the average speed of the train is 40 kmph. The acceleration, retardation during coasting and braking are 2 kmphps, 0.16 kmphs and 3.2 kmphps respectively. Assume quadrilateral approximation of speed time curve, determine the duration of the accelerating, coasting and braking periods and distance covered during these periods if the maximum speed is to be limited to 64 kmph. (12)

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