Shaft is just a connection could be anything from power source to a network connection
A shaft bearing is a low friction support device for a rotating member of a mechanical machine.
The device which control the speed of Turbine is Governor. The Governing system sense the speed of shaft & regulate the Fuel/ Motive fluid flow to the Turbine to maintain the set shaft speed.
it's called the "shaft" it's called the "shaft"
the shaft
the rotor shaft
An anemometer is a device to measure wind speed. It is usually a series of arms extending our form a turnable central shaft. On the end of each arm is a "cup" which catches the wind. As the wind fills the cups, the arms spin, and thus the central shaft does too. The central shaft is connected to a device which converts turns of the shaft into miles (or kilometers) per hour.
A horizontal mine shaft is called an adit. en.wikipedia.org/wiki/Adit
The main portion or shaft of a long bone is called the diaphysis.
A feather has a main shaft, called the rachis.
a device to measure rotation speed of a shaft as a proportional voltage
A volcano shaft is called the vent, which lets the magma pour out.
it is a mechanical device whereby signal will move a motor shaft degrees