Power tools are commonly driven by which two types of power?

Power tools are primarily driven by electrical and pneumatic sources due to their effectiveness, efficiency, and widespread availability. Electrical power tools are powered using electricity from an outlet or battery, providing a reliable and consistent energy source that facilitates a wide range of applications, from drilling to cutting. Pneumatic tools, on the other hand, utilize compressed air to function, which allows for lighter tool designs and the ability to generate significant power for high-demand tasks like nailing or grinding.

In a variety of industrial and construction settings, both types of power tools are essential. Electric tools tend to be used for tasks requiring portability and ease of use, while pneumatic tools are often favored in situations where high torque and prolonged use are necessary, as they can maintain power without overheating.

The other options mention different combinations of power sources that are less common for power tools. For instance, hydraulic power is usually utilized in specific applications like lifts or heavy machinery, while manual tools do not typically apply in a discussion of power tools, as they do not rely on powered sources. Mechanical power and hydraulic also focus on very specialized applications rather than the general use seen with electrical and pneumatic tools.