Which of the following hydraulic components would be considered manually operated?

The hand pump is considered a manually operated hydraulic component because it relies on human effort to generate hydraulic pressure. Users physically actuate the hand pump, typically through a lever or handle motion, which directly translates their mechanical work into hydraulic fluid movement within the system. This design allows operators to control the pressure and flow of hydraulic fluid manually, making it ideal for applications where a power source may not be readily available or where precise, controlled actuation is needed.

In contrast, other components listed, such as power pumps and electric pumps, are powered by external sources, like electrical energy or engine power, which automate the process of generating hydraulic pressure without requiring manual input. The hydraulic press, while it can also be activated or adjusted manually, primarily relies on the hydraulic system itself for operation, often utilizing a power source to perform larger tasks requiring significant force.