Computer Science · May / June 2016 · Paper 12 · Question 2
2210
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Motion sensors are used in a security system to detect intruders. Name three other sensors that could be used in the following applications. Give a different type of sensor for each application. Application Sensor controlling street lights monitoring a river for pollution controlling traffic lights [3]
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Application Sensor controlling street lights Light monitoring a river for pollution Gas, pH, temperature, light controlling traffic lights pressure, magnetic field, NOTE: The same sensor cannot be given twice [3]
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