The graphic dotted line between items "27",...

The graphic dotted line between items "27",...

Question 1 of 2707066636eef28f7522a1c51fc83

The graphic dotted line between items "27", "12", "9", and "20", shown in the illustration, is used to indicate the use of __________. Illustration MO-0111

Question 1 of 27070

Q

The graphic dotted line between items "27", "12", "9", and "20", shown in the illustration, is used to indicate the use of __________. Illustration MO-0111

No Illustration

This question does not have an illustration

🔍 Key Concepts

• P&ID (Piping and Instrumentation Diagram) symbols – what do solid lines vs. dashed lines usually represent? • Look at what kinds of components items 9, 12, 20, and 27 are (valves, switches, or vents?). • Difference between a pipe/vent line and a control or signal line on machinery diagrams.

💭 Think About

• Ask yourself: are items 9, 12, 20, and 27 actually vents to atmosphere, or are they devices that would need a signal or control connection? • Compare the style of the dotted line with the solid piping lines that carry fluid – does the dotted line connect to the same kinds of equipment, or to instruments and actuators? • Which answer choice best matches something that would link a pressure/level switch at the top of a tank to remote pushbuttons or control boxes?

✅ Before You Answer

• Verify whether the dotted line follows the same path as fluid piping or instead jumps from instrument to instrument. • Check the legend of typical marine system drawings: dashed lines usually denote signal/control connections, not fluid flow. • Before choosing, ask if the option could realistically be drawn as a single symbolic line to represent multiple conductors or circuits.