Interview-Questions-with-answers

Sensors : Let us say the person be X whose mother tongue is hindi and the other  person be  Y whose mother tongue is tamil. Now the person X cannot understand what the person Y says,  similarly the person Y cannot understand what the person X says. Now to make the understand each other we need to have an intermediate person to translate their languages. An intermediate person role is to make them communicate and understand better. The same role is here for the sensor it connects the device and the controller. What is sensor?  Sensor is a device which  converts the physical signal to electrically measurable signals. The variation in the signals and the response of the devices are based on the changes in the environment. By the way it coordinates the device and the controller What are physical signals?  The physical signals may be: Temperature Light Blood pressure Humidity Speed Smoke.  e.t.c Types of sensors:  Let us se...