Which gate is used in the graphical representation, if several events ...
Explanation: The fault tree analysis is done graphically by using gates. The main gates used are AND gates and OR gates. The AND gates are used in the graphical representation, if several events cause hazards.
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Which gate is used in the graphical representation, if several events ...
AND gate is used in the graphical representation when several events cause hazard:
- Explanation:
- AND gate:
- In the context of hazard analysis in digital circuits, an AND gate is used when multiple events need to occur simultaneously to cause a hazard.
- An AND gate outputs a high signal only when all of its input signals are high, representing the concept that all the contributing events must be present for a hazard to occur.
- Several events causing hazard:
- When there are multiple conditions or events that, when combined, can lead to a hazard, an AND gate is used to represent this scenario.
- Each input of the AND gate corresponds to a specific event or condition that contributes to the overall hazard.
- The AND gate ensures that the hazard is triggered only when all the contributing events are present simultaneously.
- Example:
- For instance, in a safety-critical system, a hazard may occur only when the temperature exceeds a certain threshold, the pressure reaches a critical level, and a specific sensor fails. In this case, an AND gate would be used to combine these conditions.
- Conclusion:
- By using an AND gate in the graphical representation of hazards caused by several events, designers can model complex scenarios where multiple factors need to align for a hazardous situation to arise.