Which of the following terms is used to identify the pressure of a liquid entering a centrifugal pump?

Correct Answer: Option A — Suction head

Suction head refers to the pressure or energy level of the fluid at the pump's inlet flange. It is a critical parameter in calculating the Net Positive Suction Head (NPSH) required to prevent cavitation. Understanding the suction head is essential for ensuring the pump operates within its design parameters and avoids damage.