6.1.3. Based on Mode of Operation

Try these first

1. 1.

   What is the main difference between active and passive sensors?

   Hint

   Think about the power requirements.

2. 2.

   Name an example of an active sensor.

   Hint

   Consider sensors used for measuring deformation.

3. 3.

   Which of the following sensors requires an external power source?

   • Strain Gauge
   • Thermocouple
   • Both

   Hint

   Consider the definition of active sensors.

4. 4.

   True or False: Passive sensors require an external power source to measure.

   • True
   • False

   Hint

   Recall the characteristics of passive sensors.

5. 5.

   Design a monitoring system using both active and passive sensors for a bridge. What would you include and why?

   Hint

   Think about the functions of each sensor type in relation to the bridge's needs.

6. 6.

   Evaluate the potential drawbacks of relying solely on passive sensors in a critical infrastructure project.

   Hint

   Consider how external factors could influence sensor performance.