Q84.
Consider the following actions: 1. Detection of car crash/collision which results in the deployment of airbags almost instantaneously 2. Detection of accidental free fall of a laptop towards the ground which results in the immediate turning off of the hard drive 3. Detection of the tilt of the smartphone which results in the rotation of display between portrait and landscape mode In how many of the above actions is the function of accelerometer required?
Answer
C
Explanation
accelerometer is a device that measures the or acceleration of motion of a structure. sensors have the ability to alter obtained acceleration from motion or gravity into a output. applications of accelerometer include- The invention of airbags have saved millions of over the years. Accelerometers are used to trigger airbags as the sensor would send a signal when it a sudden shock. In the event of a crash, the sensor (an accelerometer) sends a signal to the control unit. This control unit triggers the device, which generates nitrogen gas by a mixture of sodium azide (NaN3) and nitrate (KNO3). Hence, statement 1 and 2 are correct. Machinery: Accelerometers used in rotating detect undulating vibrations. Electronic these days (including smartphones, tablets and laptops) have a sense of gravity designed into it can therefore tell up from down by using an Hence, statement 3 is correct. option (c) is the correct answer.