🔍 Key Concepts
• Look closely at the joint where the driver shaft meets the pump shaft in the illustration, not at the impeller or bearings.
• Compare visual features of a rigid/solid coupling versus couplings that use flexible or toothed elements (grid, gear, jaw).
• Think about whether this pump arrangement is likely designed for misalignment flexibility or for a simple, rigid connection between two coaxial shafts.
đź’ Think About
• Do you see any separate flexible element, teeth, or grid between two hubs, or does the illustration show one continuous, solid piece connecting the shafts?
• Which of the listed coupling types would clearly show meshing teeth or an elastomer insert if it were drawn in section like this?
• If a coupling is meant to accommodate misalignment, what extra parts or shapes would you expect to see that are different from a plain sleeve or flange connection?
âś… Before You Answer
• Identify exactly where the coupling is located in GS-0143 (between the pump shaft and the driving member) before deciding.
• Check whether the coupling in the figure has gear teeth, a serpentine grid, or jaw-shaped fingers with an insert — if you don’t see those, rule out the matching options.
• Ask yourself if the connection shown appears one-piece and rigid or made of multiple interacting flexible components; match that observation to the closest choice.