76 . 140 48.96 - 2. Phase angle o is the phase difference between the current i(t) and the voltage U(() of the sine wave source. In Experiment 8.2 you actually measure the phase angle @ between UR(() and U(t) rather than i(t ) and U(t) , why ?3. Based on the calculated phase angles theory or Pes in Table 3, draw a phasor diagram of the LCR circuit at each of the two frequencies: f = 500 Hz and 8000 Hz, and complete the following two statements. (a) At f = Hz, the voltage ( U ) across the signal generator leads the current (i). (b) At f = Hz, the voltage ( U ) across the signal generator lags the current (i). Note: Go through "Theory" in Exp. 8.1 before you draw the phasor diagram.4. Record in Table 2 the measured values of (UR) and t(v) at the three frequencies Table 2 Measured values of ((UR) and t(v) at the three frequencies (L = 3.3 mH, C = 0,39 MF, R = 100 02) f = 1000 Hz f = fres (theory) f = 8000 Hz t(UR) (5) 0 - 00104 5 12.76 000 * 10 45 1 . 64 X 10-4 1 (v) (s ) 1 .001 25 12. 76060 x10-45 1. 48 X 10 5. Calculate Pop and 9theory at the three frequencies listed in Table 3. The details of your calculations on Pop and Ptheory will be the answers to question 1 in the section of "Questions and exercises". Table 3 Comparison of Peg with Ptheory at the three frequencies (L =3.3 mH, C= 0,39 UF, R= 100 02) f = 1000 Hz f =fres f = 8000 Hz At = 1(Up ) - 1(0) = -0. 000 2 1 Pexp 75. 630 0 46.080 Ptheory = -76. 140 148. 960 slast off bris 6. Key issue in answering question #2 - R-L-C series circuit and phasor diagram To answer question #2 listed at the end of Exp 8.2 in the lab manual, you need to review the concept of R-L-C series circuit and phasor diagram which you learned in the lecture course. A summary of R-L-C series circuit and phasor diagram is given in the pdf file of "PHY2049L Exp 8 Theory". Please go through this file thoroughly before you answer question #2. 7. Instructions for lab report on Exp 8 (a) Figures 1 and 2 should be included in your Exp 8 report. x3 ni SHot It amomsruessM mott stall & (b) Tables 1 to 3 with all the required data should be included in your Exp 8 lab report. (c) Answers or solutions (with detail reasonings, calculations and diagrams) to the questions #1 to #4 at the end of Exp 8.2 lab manual should be included in your Exp 8 lab report. (d) The required other contents and format for your lab report can be found in the syllabus