Helen gluer biography
Helen gluer biography
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Electric multiple unit
Electric train with no locomotive
An electric multiple unit or EMU is a multiple-unittrain consisting of self-propelled carriages using electricity as the motive power.
An EMU requires no separate locomotive, as electric traction motors are incorporated within one or a number of the carriages. An EMU is usually formed of two or more semi-permanently coupled carriages, but electrically powered single-unit railcars are also generally classed as EMUs.
The great majority of EMUs are passenger trains, but versions also exist for carrying mail.
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EMUs are popular on commuter, and suburban rail networks around the world due to their fast acceleration and pollution-free operation,[1] and are used on most rapid-transit systems. Being quieter than diesel multiple units (DMUs) and locomotive-hauled trains, EMUs can operate later at night and more frequently without disturbing nearby residents.
In addition, tunnel design for EMU trains is simpler as