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pset1SP10 - MAE 3800 Instrumentation and Measurements...

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MAE 3800 Instrumentation and Measurements Laboratory Problem Set #1 Due: Tuesday, February 23 Problem 1 (10 points) One method to measure the current passing through a load is by inserting a shunt resistor with known resistance into the circuit and measure the voltage over the shunt resistor. The voltage over the 4 Ohm shunt resistor is 2 volt in the figure. The load has a resistance of 40 Ohm. Assume that the voltage supplied by the battery is a constant. (a) What is the current flowing through the shunt resistor? (b) What would have been the current flowing through the load if the shunt resistor had not been inserted into the circuit? Problem 2 (10 points) [Prob. 7.6] The circuit shown in Figure 7.37 is used to determine the value of the unknown resistance 2 R . (a) If the voltmeter (input) resistance, L R , is 10 M and voltmeter reads V 65 . 4 = o e , what is the value of 2 R ? Use this value to answer part (b). (b) If the voltmeter has input impedance L R =1 k , what will be the measured voltage? Problem 3 (10 points) [Prob. 9.4 ] Figure 9.20 illustrates a clipped sine wave. (a) Determine the
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