In a hydraulic power unit, which component converts mechanical energy into hydraulic energy?

In a hydraulic power unit, which component converts mechanical energy into hydraulic energy?

• A. Reservoir
• B. Accumulator
• C. Hydraulic pump (correct)
• D. Manometer

Answer: (C)

The key idea is where energy from the motor becomes energy carried by the fluid. That conversion happens in the hydraulic pump. The pump uses mechanical energy to move the liquid and raise its pressure, creating the hydraulic power that drives actuators and other components in the system. The reservoir just holds fluid and provides a supply; it doesn’t add energy. The accumulator stores energy by compressing gas to smooth pressure, but isn’t the source of energy transfer from the motor to the fluid. The manometer only measures pressure, not energy conversion. So the pump is the component that converts mechanical energy into hydraulic energy.

The key idea is where energy from the motor becomes energy carried by the fluid. That conversion happens in the hydraulic pump. The pump uses mechanical energy to move the liquid and raise its pressure, creating the hydraulic power that drives actuators and other components in the system. The reservoir just holds fluid and provides a supply; it doesn’t add energy. The accumulator stores energy by compressing gas to smooth pressure, but isn’t the source of energy transfer from the motor to the fluid. The manometer only measures pressure, not energy conversion. So the pump is the component that converts mechanical energy into hydraulic energy.