Question

4. Analogue to digital converter (ADC) is one of the data processing. i. Describe the term quantization errot, sample af signal i ADK i. A 9 bits ADC is used in an electronic device for the murnt of analogue signal within the range of -TV to +TV. If an an measured as +3.2V, determine the value shows by the ADC (5 marks) The Wheatstone bridge circuit shown in the following figure is used to messure the resistance of a strain gauge. 5. 5000 16V 85Ω Strain gauge Figure 2 L Determine the resistance value, Rx of the strain gauge if the bridge is balanced? (2 marks) The strain gauge is applied with a force, resulting the bridge to be unbalanced. The current flows through the galvanometer, Ic is measured to be -85.50mA. Calculate the new resistance value of the strain gauge if the internal resistance of the galvanometer is 4002. 1 Design an operational amplifier circuit with inputs Vi and V' such that ou- 5V+3V Suggest the values of resistoe used in the dessignd amplifie circuit 4 marks 2 The following circuit shows the instrumentation amplifier R: Rs Figue It is given that the valus oRSis djussesd o 5000 determine the output voltage. Vour 12012027 3. A high pass passive fiter rjects signals that have trequenay lower than Su while passes other signals frequencies, is needed to be designed i. Sketch a high pass passive fiter that consists of resistor and capscihos Label your citeuit. marks) ii. Determine the transter function, Hiav) and the value of RC of the cir O arks ii. Sketch a frequency response of the fiter C marks)

Answer 1

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