1 answer

In this question I just wondering about question (a)... Actually I soved other questoons but I...

Question:

Variation of 31.56: The L-R-c Parallel Circuit. A resistor, r, and capacitor are connected in parallel to an ac source with voltage amplitude V and angular frequency co. a) Use Kirchoff s Laws, V IR, Q C/V. V Ldi/dt, and i dq/dt to determine the voltage across each element. Now, let the source voltage be given by v Vcos (ot. b) Show that the instantaneous voltages vR, Vi, and v at any instant are equal to v and that i igti tic, where i is the current through the source and iR, iL, and ic are currents through the resistor, inductor, and the capacitor. c) What are the phases of iR, iL and ic with respect to v? Use current phasors to represent i, iR, iu, and i In a phasor diagram, show the phases of these four currents with respect to v d) Use the phasor diagram of part b) to show that the current amplitude i for the current l through the 2 0.5 source is given by I R+( lc -IL) e) Show that the result of part c) can be written as EVZ with 1/2 1/R3 +(oC-1/ole)

In this question I just wondering about question (a)... Actually I soved other questoons but I don't undertand question (a).. .. help me..

Variation of 31.56: The L-R-c Parallel Circuit. A resistor, r, and capacitor are connected in parallel to an ac source with voltage amplitude V and angular frequency co. a) Use Kirchoff s Laws, V IR, Q C/V. V Ldi/dt, and i dq/dt to determine the voltage across each element. Now, let the source voltage be given by v Vcos (ot. b) Show that the instantaneous voltages vR, Vi, and v at any instant are equal to v and that i igti tic, where i is the current through the source and iR, iL, and ic are currents through the resistor, inductor, and the capacitor. c) What are the phases of iR, iL and ic with respect to v? Use current phasors to represent i, iR, iu, and i In a phasor diagram, show the phases of these four currents with respect to v d) Use the phasor diagram of part b) to show that the current amplitude i for the current l through the 2 0.5 source is given by I R+( lc -IL) e) Show that the result of part c) can be written as EVZ with 1/2 1/R3 +(oC-1/ole)

Answers

March 2016 14 21 815 2229 916 3 ond 088- 278 Monday 10 エレApri 8 15 2 9 16 2 10 17 2 29 Tuesday , 089-277 tr-TR 20 127 10 12

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