Question:

Which of these symbols can be found in piping and instrumentation diagrams? 

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P&IDs are essential for system design and operation. Ensure familiarity with the standard symbols used in process flow diagrams.
Updated On: Jan 2, 2026
  • (Q) and (S) only
  • (P), (Q) and (R) only
  • (P), (R) and (S) only
  • (P), (Q), (R) and (S)
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The Correct Option is C

Solution and Explanation

The symbols (P), (Q), (R), and (S) are commonly used in piping and instrumentation diagrams (P&ID). Each symbol represents different types of equipment or instruments in the diagram:
- (P): Valve
- (Q): Pump
- (R): Flow indicator
- (S): Heat exchanger
Thus, all options (P), (Q), (R), and (S) are part of the P&ID system.
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