Express trains have attained speeds of 80 Kmph since as early as the 1860s. Therefore efficient braking has always been a necessity. Modern trains use a dynamic braking system which is a blend of mechanical braking and electric brake systems which rely on reversing the traction motors to electric generators. In this video I start by explaining how air brakes work in trains. I follow this up by conceptually explaining working of regenerative brakes in electric locomotives and electric trains
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