Chapter 10

Electric Traction-II


After reading this chapter, you should be able to:

  • know the various types of services

  • analyze the different speed–time curves

  • understand the various factors affecting the propulsion of a traction vehicle

10.1 Introduction

The movement of trains and their energy consumption can be most conveniently studied by means of the speed–distance and the speed–time curves. The motion of any vehicle may be at constant speed or it may consist of periodic acceleration and retardation. The speed–time curves have significant importance in traction. If the frictional resistance to the motion is known value, the energy required for motion of the vehicle can be determined from it. Moreover, this curve gives the speed ...

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