How magnetic levitation lifts and propels high-speed maglev trains
Magnetic levitation lifts and propels trains without wheel-track contact, enabling very high speeds but requiring costly, specialised infrastructure.
- Maglev trains run without direct contact between the train and the track, which reduces rolling friction and wear.
- Magnetic levitation systems use one magnetic function for lift and another for propulsion, with electronic control maintaining stability.
- Maglev infrastructure requires specialised guideways, precise alignment, strong power supply, and control mechanisms.
Magnetic-levitation, or maglev, trains are a high-speed rail technology in which magnets lift the train slightly above the guideway and propel it forward. The result is very low rolling friction, less wear, and smoother movement, but the system depends on specialised infrastructure and strong electronic control.
A The Hindu feature explains the basic working principle of maglev systems and why they can run faster than conventional rail. The train does not touch the track, so mechanical contact is removed and speed can rise much higher than in ordinary wheel-and-rail systems.
How maglev works
UPSC can frame maglev trains around the science of magnetic levitation, the engineering distinction between lift and propulsion, and the policy trade-off between speed gains and expensive, specialised infrastructure.
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