A two stage hydraulic pump unit is used to __________.

Correct Answer: Option C — develop the same flow rate across both pump elements with the discharge pressure of the second pump element being substantially higher than that of the first stage

Two-stage hydraulic pumps utilize a high-volume, low-pressure stage for rapid movement and a low-volume, high-pressure stage for force. By operating in series, the second stage increases the discharge pressure significantly while maintaining the flow rate established by the pump's displacement, essential for heavy-duty marine machinery operations.