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No. This is a matter of choice. They may spin in whichever direction they desire.
Does spinning water always spin in the same direction?
The motor runs in one direction to agitate, in the opposite direction to spin. If the reversing switch is bad, the brake will not release, the tub won't spin, and you may smell the belt getting hot due to slippage.
power
Yes it does no matter what.
They can all be used to spin turbines that will generate electricity.
turbines spin when there is a cause of wind..!!
Turbines spin generators that produce electrical energy.
Heat
it would spin slower
Direction of spin is dependent on the direction of the rifling on the inside bore of the barrel. A bullet will spin the same direction as the rifling.
turbines
Power plants. Not a plant like a tree or a shrub- it is an industrial structure that uses the weight of falling water to spin turbines. The turbines spin electrical generators.
Rotors or blades.
If you're talking about sticking turbines onto the train: It's possible, but pointless. The turbines would spin due to wind speed generated by the movement of the train, so all the power that is going into the turbines has come from the train in the beginning. Basically you're using the motor of the train to spin the generator of the turbines. The train has to work harder, and the energy you get from the turbines will be less than the extra energy that's being spent by the train. If you're talking about sticking wind turbines by the track, to spin by the pressure wave: That's also possible, but almost as pointless. Turbines by the track would resist air flow, and when the train is travelling it will push a cushion of air in front of it. Something getting into the way of this air cushion, (like turbines) would basically make the air in front of the train denser, and harder to push through. On top of that, there aren't many places where trains go by all the time, so the turbines wouldn't have much to work with.
Turbines. These are then used to spin magnets next to wires. This generates electricity.
No. This is a matter of choice. They may spin in whichever direction they desire.