Chill Out and Smash the Refrigeration Plant Operator B Test 2025 – Cool Down Your Future!

A single-acting pump is specifically designed to discharge fluid during the movement of its piston or plunger in one direction. In this design, the fluid is drawn into the cylinder on the return stroke and then expelled during the forward stroke, with the discharge occurring only during that single direction of motion. This makes it distinctive from other types of pumps where the mechanism may allow for both forward and backward movement to impact fluid discharge.

Dynamic pumps, on the other hand, function primarily through kinetic energy and are not reliant on a plunger or piston for the movement of fluid. Double-acting pumps have the capability to discharge fluid during both directions of the piston movement, which means they operate quite differently from single-acting pumps. Reciprocating pumps encompass a broader category that includes both single and double-acting types but does not specify the one-directional action that characterizes a single-acting pump. Hence, the feature of discharging fluid only in one direction confirms why a single-acting pump is the correct response.