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Which of the following can be employed for position sensing?

Which of the following can be employed for position sensing? Correct Answer Potentiometer

Concept:

Position sensors: Position sensors detect the position of something which means that they are referenced either to or from some fixed point or position. These types of sensors provide “positional” feedback.

Potentiometer: A potentiometer is a three-terminal resistor with a sliding or rotating contact that forms an adjustable voltage divider. Here, resistance is proportional to position. The most commonly used of all the “Position Sensors”, is the potentiometer because it is an inexpensive and easy to use "position sensor".

Important Points

LDR: Light Dependent Resistor (LDR) or photoresistor is a special type of light sensor. The light-dependent resistor’s resistance changes with the change in the daylight intensity (based on the light illuminated on the LDR).

Optocoupler: An optocoupler is an electronic component that transfers electrical signals between two isolated circuits by using light. Example: An LED and a phototransistor when put in a closed tube, the light coming from the LED will light up the ‘base’ of the phototransistor make it conductive. 

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