You can't, unless you have a crazy tap changer so you can remove or add windings to change the ratio from N1 > N2 to N2 > N1.
For a step-down transformer, its secondary winding will be the LV winding. For a step-up transformer, its primary winding will be its LV winding.
Chopping wood is a physical change because the wood is being physically broken down into smaller pieces without changing its chemical composition.
The process of breaking down the rock material without changing its chemical composition is called mechanical weathering.
Weathering
Reduce friction. Push it down hill. Change the vector (the angle that you shot a gun).
erosion
Yes, but besides just filtering oil, oil viscosity breaks down too. So change the oil too.
When velocity and acceleration are not in the same direction, the object's speed may be changing. If the acceleration and velocity are in opposite directions, the object will slow down. If they are at right angles to each other, the object will change direction without changing speed.
An object's motion can change by speeding up, slowing down, changing direction, changing speed, or coming to a complete stop.
The voltage induced into the secondary winding will be lower than the voltage applied to the primary winding. The primary winding being the winding connected to the supply, while the secondary winding is the one connected to the load.
When rotors need to be changed usually the pads have worn down. It is always a good idea to change pads when changing rotors.
Physical (also referred to as mechanical) weathering does not cause a change in the chemistry of a rock, only a diminution of size.