IoT Sensors and Devices

___ is an input device that provides an output (signal) with respect to a specific physical quantity (input).

• transmitter

• signal

• sensor

• IoT

Which of these do not require any external power signal and directly generates output response?

• Sensors

• Passive Sensors

• Active Sensors

• Microcontroller

What type of sensor is shown in the figure?

• Passive sensor

• Active sensor

Guess the type of sensor from the figure shown.

• PIR sensor

• ultrasonic sensor

• rainfall sensor

• smoke detector

Which of these is a touch sensor?

• 
• 
• 
• None of these

Which of these is a non-contact type of sensor?

• Ultrasonic sensor

• PIR sensor

• Touch Sensor

• both A and B

What is the output voltage when the smoke is detected through the MQ-2 sensor?

• High

• Low

What happens to the resistance value when the soil moisture sensor detects the high amount of moisture in the soil?

Evaluate responses using AI:

OFF

Draw an LDR sensor

Which of these is an application of microcontroller?

• Calculators

• Accounting system

• Washing machine

• Games machine