Question 1144 Deck General

The correct answer is C) Slowing the pumping rate. Slowing the pumping rate in a pipe will not increase the friction of the liquid flowing, and therefore will not cause a loss of suction head. Reducing the flow rate decreases the velocity of the liquid, which in turn reduces the frictional losses along the pipe. In contrast, options A, B, and D would increase the friction and resistance to flow, leading to a loss of suction head. Pipeline valves, backing rings, and bends in the piping all create obstructions or changes in the pipe geometry, which increase the friction and pressure drop in the system.