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Tramcars are self propelled electric-locomotives often run on tracks as a means of transportation for passengers. They are widely run along the roadways. It can be found in many cities around the globe. Tramcars are electric operated using a traction motor, often DC. They are provided with overhe ad pantographs to collect current from overhead lines. These tramcars include machinery like rotary converters that are used for stepping down voltage from high voltage supply to that required traction. These trams use DC motors for traction. These motors work when a current is passed through the motor circuit, there is a reaction between the current in the field and the current in the armature, which causes the armature to turn. DC resistance controls are used in these trams to maintain the voltage and keep the tram in uniform speed. Circuit relays are used for motor and power circuit protection. Tramcars are used as a means of relaxed journey as they run slow on tracks. A wide range of tram equipment is manufactured by a host of manufacturers.
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