Question 251General Subjects - QMED

The correct answer is A) discharge head. The discharge head refers to the pressure of the liquid as it leaves the pump. This is a key measurement in understanding the performance of a pump and the overall liquid flow system. The discharge head is the pressure that the pump is able to create and overcome, which drives the liquid through the system. The other options are incorrect because: B) Total head refers to the overall pressure in the system, including both the suction and discharge sides. C) Suction head refers to the pressure on the suction side of the pump, before the liquid enters. D) Net positive suction head refers to the minimum pressure required at the pump inlet to prevent cavitation.