can solar power move a trains carriages?

Not in the way that you mean. Solar panels on the train won't produce enough power. The amount of sun hitting the train isn't enough to move it at a reasonable speed. If there were solar panels all along the track, feeding electricity into the train through the rails or overhead wires, that could work. But at that point, you might as well just connect the solar panels to the local electricity company and use electricity from the local electricity company to run the train. That's better anyway, because the solar power gets used even when there is no train, and the train can run even when there is no sun.

The electricity generated by solar power can move a train if there is enough of it.

There are solar farms on the planet that add electricity to the national grids.The electricity can come from a wind turbine a wave turbine a hydraulic turbine or from a fuel burning steam plant. Electricity is electricity. When you have enough you can move the train.

Can solar panel on the roof of the train supply enough power the answer is NO.

There are many places like this around the world that supply electricity for use by the local networks.

http://news.prsjobs.com/top-stories-of-the-year-government-completes-uks-largest-solar-farm-and-hmt-ends-community-energy/

See if there is one near you and go for a look . They are very large.
https://en.wikipedia.org/wiki/List_of_photovoltaic_power_stations

https://en.wikipedia.org/wiki/Solar_power_by_country

Electricity generated by Solar power has to be used immediately, by feeding it into a national grid system, or stored in batteries. There is no way that the limited roof area of a train can generate enough electricity to operate it, and even if it could, what happens at night? Far better to have a mix of power generators - fossil/nuclear fuel-fired boilers and turbo-generators, wind, tide, hydro-electric etc. all feeding into a grid system from which the trains take their power.
Regarding 'Pilsner Man's answer, in diesel-electric locomotives the engine drives a generator/alternator that supplies electricity to the traction motors. They do not require concrete for additional weight for adhesion - the fact that they are carting around a mobile power station is weight enough!

Not hardly. Solar power is only useful if the energy is stored in batteries. You have to remember, diesel locomotives aren't powered by the engines, they are powered by the engine spinning electric motors and weigh about 100 tons. They have concrete ballast in them to add weight so the driving wheels don't spin. The motors are also used for braking. Solar power and trains will never happen.

Solar power may be useful for powering lights, heat or cooling and other things, but motors are not an efficient use of electrical energy - most of the energy ends up as heat. Solar power would require a different type of propulsion and braking. You might also be able to harness wind energy as the train moves to help, but you need to find an alternative means to lighten the load and then cause it to move using the track as a guide. If you can make that happen, solar power might be viable for trains.

No.

1

Yes drifts. O = HUMANITY
I

Yes, absolutely, especially today with efficient traction motors. Solar panels may be installed on top of railroad cars, on buildings and along the right of ways.

Yes, but solar power is not an effecient means of powering trains unless you're happy with very slow trains.

no, they are too heavy