Which of the following statement about a maglev train is/are not true? (i) a maglev train does not have wheels. (ii) magnets in the track and on the bottom of the train repel to lift up the train above its track. (iii) magnetic forces of attraction are used to reduce friction. (iv) gravity does not act on a moving maglev train.
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Some railway transport systems incorporate linear motors but use electromagnetism only for propulsion, without levitating the vehicle. Such trains have wheels and are not maglevs. Maglev tracks, monorail or not, can also be constructed at grade or underground in tunnels.
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