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# 271-4 - R L in steps of 100 Ω from 0 to 1k Ω calculate...

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HACETTEPE UNIVERSITY DEPARTMENT OF ELECTRICAL & ELECTRONICS ENGINEERING ELE 271 MEASUREMENT LABORATORY EXPERIMENT #4 POWER IN DC CIRCUITS Object : To investigate the power generated and dissipated in DC circuits , and to verify the maximum power transfer theorem. Theory : The details are given in the ELE 203 Circuit Theory I course notes. 1. PRELIMINARY WORK : 1.1 For the circuit given in figure 1, find the dissipated and generated powers. 10mA + - a b R L 1k 12V 1k 1k Figure 1 1.2 Show that the total power generated by the sources is equal to the total power dissipated by the resistors. 1.3 Determine the value of R L that is to be connected between a and b to realize the maximum power transfer. 2.EXPERIMENTAL WORK : 18

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Set up the circuit in figure 1. 2.1 Calculate the power generated by the current and the voltage sources, by measuring the relevant voltages and currents. 2.2 Calculate the power dissipated by the resistors, by measuring the relevant voltages and currents. 2.3 Connect a 1k potentiometer between a and b as R L
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Unformatted text preview: R L in steps of 100 Ω from 0 to 1k Ω , calculate the power transferred to R L . 3.RESULTS & CONCLUSION : 3.1 Verify that the total power generated by the sources is equal to the total power dissipated by the resistors. 3.2 Sketch the power versus R L , using the results in section 2.3, and determine the value of R L where maximum power transfer occurs. 3.3 Compare the theoretical and practical results, and comment on them briefly. EQUIPMENT AND COMPONENTS : DC power supply 10 mA. current source AVO meter Resistors: 1k Ω (#3), 1k Ω pot HACETTEPE UNIVERSITY DEPARTMENT OF ELECTRICAL & ELECTRONICS ENGINEERING 19 ELE 271 MEASUREMENT LABORATORY EXPERIMENT #4 Experiment Date: Group No : Group Members : RESULTS : 2.1 V(voltage source)= I(voltage source)= P(voltage source)= V(current source)= I(current source)= P(current source)= 2.2 V1= I1= P1= V2= I2= P2= V3= I3= P3= 2.3 R L ( Ω ) V L I L P L 100 200 300 400 500 600 700 20...
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