Question

Which of these statements regarding sensors is TRUE?
a. Sensors are input devices.
b. Sensors can be analog as well as digital
c. Sensors respond to some external stimuli.
d. All of these

Answer 1

All are true.

• Sensors are input devices.

• Sensors can be analogue as well as digital

• Sensors respond to some external stimuli.

In addition to this, a sensor is a device that helps in detection and responding of the input from the physical world.

It can be moisture, heat, light, pressure, etc.

Answer 2

All of these options are TRUE statements regarding sensors.

Option: (d)

Explanation:

• A sensor can be defined as a device which can be detected and responded to various types of input from the physical environment.

• The inputs can be heat, light, motion, pressure, moisture, or any other number of environmental phenomenons.  

• The output can be generally a signal which can be converted to human readable format at the ‘sensor location’ that can be ‘transmitted electronically’ over a network for further processing.

• The signals used can be both analog or digital.

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