Question 13 AEL01 - Assistant Engineer - Limited

The Correct Answer is A **Explanation for Option A ("7"):** Component "7" in the illustration (MO-0122, typically depicting a piston assembly and connecting rod) directly indicates the **wrist pin** (also known as the piston pin or gudgeon pin). The wrist pin is the cylindrical shaft that passes through the piston bosses and the small end of the connecting rod, allowing the connecting rod to pivot relative to the piston. **Explanation for Incorrect Options:** * **B) "17":** Component "17" typically points to the **piston rings** (specifically the compression or oil control rings) that seal the piston against the cylinder wall, not the wrist pin. * **C) "G":** Component "G" typically points to the **connecting rod** itself, the large structural piece that links the piston assembly to the crankshaft, not the wrist pin. * **D) "S":** Component "S" typically points to the **piston skirt** or the main body of the piston, which guides the piston within the cylinder, not the wrist pin.