Module 6 Practice Questions on Loop Diagrams and Centralized Computer Control

Loop diagrams show both the minimum and optional items that are required for a control loop.

Centralized computer control was more reliable than using many single loop controllers.

Communication between instrumentation devices is typically not explicitly shown in a Piping and Instrument Diagram (P&ID).

When using multiplexing, the number of wires needed from the remote I/O location to the control room remains the same as if each RTD had its own dedicated wires.

Consensus standards are typically developed by professional societies.

Programmable Logic Controllers (PLCs) have generally adopted the Ladder Logic standard for programming.

Turndown ratio is LEAST applicable to solid state devices.

Mandatory replacement of vessels is NOT typically regulated by industry code related to pressure vessels.

Location plans are generally developed first in a document development process.

Operating instructions may be included in a functional specification or operating description.

In traditional supervisory control and data acquisition (SCADA), Remote termination units (RTUs) using microprocessors are not smart and they do need a master termination unit (MTU).

Logic diagram typically requires greatest amount of engineering time in the development process.

Vessel data sheets are not generally recommended for inclusion in a P&ID (Piping and Instrumentation Diagram).

Distribution of tasks among many processors allowed for a physical distribution of tasks in a distributed network.

The amount of product a plant might make is NOT included in a PFD (Process Flow Diagram).