fast start low speed
dc series motor used in metro train.
dc series motors
An electric train uses electric motors. Modern trains have many motors, they are mounted on the axles, one motor per axle. Some axles will be powered and have motors on them, some will not.
due to high starting torque and droping charactristics
Trains are built with plastic and metal. Electricity is used to run the motor in the train. The train gets the electricity from the track or catenary wire which is connected to the appropriate power supply.
dc series motor :A series-wound DC motor has a low resistance field and armature circuit. Because of this, when voltage is applied to it, the current is high. (Ohms Law: current = voltage/resistance). The advantage of high current is that the magnetic fields inside the motor are strong, producing high torque (turning force), so it is ideal for starting a train. The disadvantage is that the current flowing into the motor has to be limited, otherwise the supply could be overloaded and/or the motor and its cabling could be damaged.
dc series motors are used because of torque vs speed characteristics.
becoz of high starting torqe to move train
take motor and make a cardbord train attach motor between and bottom of train and attach two wheels on the either side of train with motor hence it is ready
The duration of The Last Train - TV series - is 3000.0 seconds.
The carriages are made of wood and metal. The motor is a series of electro-magnets.
Union Pacific - 1958 Supply Train was released on: USA: 21 March 1959