Final answer:
A riding inspection can detect mechanical, electrical, and structural defects as it is a comprehensive evaluation of equipment or structures during operation.
Step-by-step explanation:
A riding inspection is a thorough examination of equipment, machinery, or structures while they are in operation. This type of inspection is designed to detect a range of defects that may not be apparent when the equipment is not running. During a riding inspection, an inspector might discover:
- Mechanical defects: Issues related to the moving parts of machinery, such as wear, misalignment, or lubrication problems.
- Electrical defects: Problems with wiring, circuitry, or electrical components that could lead to failures or safety hazards.
- Structural defects: Compromised integrity of the structure, including cracks, rust, or other signs of deterioration that could affect stability or safety.
Therefore, the correct answer is 4) All of the above as a riding inspection is capable of detecting mechanical, electrical, and structural defects.