Which type of drawing will show the flow of fluids in a system?

• A. Piping and instrumentation diagram
• B. Mechanical schematic diagram
• C. Electrical wiring diagram
• D. Block diagram

Answer: (B)

A mechanical schematic diagram focuses on how components are connected and how fluids would travel through the system. It shows pipes, valves, pumps, and other fittings laid out in a way that reveals the actual flow paths and relationships between parts. This makes it a clear way to understand the route a fluid takes from intake to outlet, including how components like valves or pumps influence that flow.

Other diagrams serve different purposes: a piping and instrumentation diagram is used for detailed process control and instrumentation layout, an electrical wiring diagram maps circuits, and a block diagram presents high-level functional relationships rather than physical flow paths.