(b) The implementation of Internet of Things (IoT) has enabled better engagement of users to the system that leads to an improved of productivity, job satisfaction and performance. i. Explain and discuss the key element that function as the input layer to provide physical measurement in the IoT. \ii. An IoT system is measuring the deformation of a bridge using strain gauge and a voltage of 10 µV is obtained. A transistor amplifier with internal noise 100 mV is used to amplify the measured voltage to 1V. Calculate the SNR of the output signal. iii. What can be done to improve the quality of the output signal in Q.3b(ii)?

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