What is positive and negative drive?

Question

Accepted Answer

Positive drive is when power is transmitted from the driver to the driven shaft, while negative drive is when power is transmitted from the driven shaft to the driver.

Positive drive is used in most machines and vehicles, where the power is transmitted from the engine to the wheels or other components.
Negative drive is used in some machines, such as wind turbines, where the blades are turned by the wind and the generator is driven by the blades.
Positive drive is more efficient than negative drive, as there is less energy loss due to friction.
Negative drive can be useful in some situations, such as when a machine needs to be slowed down or stopped quickly.
Positive and negative drive can be achieved through various mechanisms, such as gears, belts, chains, and couplings.

What is positive and negative drive?

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