E9.13 Find Vo. 202 50/0° V j4 N 1:2 Ideal 10 Ω www 10 Ω + V₂ -j8n www 6N 4:1 Ideal 0.50 www H -j0.5 10/30° V Answer Vo=93.68 (-83°) V
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- A capacitor "C", an inductor "L" and a switch "S" are connected in series. When the switch is open, the plate to the left of the capacitor has charge "Qo". The switch is closed the load and current vary sinusoidally with time. Represent graphically the load "Qo" and the intensity of current "I" as a function of time "t", and explain why the current leads the load by a phase difference of 90°.A 15ohms resistor connected in parallel with an impedance of 8 - j2 across an AC source. The entire circuit takes a total average power of 2000 watts. What is the average power in the 15ohms resistor?The signal V1=100 cos(500t - 30°) and the signal V2=20 sin (500t +45°) compared in phase would be a) V1 15° ahead of V2 b) V1 75° behind V2 c) V2 15° ahead of V1 d) None of the above
- The current through the 20-Ohm inductive reactance is given. What will be the sinusoidal expression for voltage.i=-6 sin(wt-30°)what is the reactive power absorbed by the load ZL in VAR? Assume source is in rmsA circuit consists of an AC voltage source, a 10-ohm resistor, and a capacitor, all connected in series. The magnitude of the impedance of the capacitor is also 10 ohms. Which of the following is true about the source voltage and the current through the circuit? a. Insufficient information is given. b. The source voltage will lag the current. c. The source voltage will lead the current. d. The source voltage will be in-phase with the current.
- Explain the following 1. Diffrence between DC and AC Electricity. 2. how to convert rectangular form to polar form and polar form to rectangular form. 3. why need to improve a power factorWrite equations for the waveforms of Figure. Express the phase angle indegrees. Here the answers that I did: (a) i(t) I(t) = 5sin(1000t + 36o)mA (b) i(t) (t = 50ms is period of waveform b.) i(t) = 10sin(125.66t + 60o)A (c) v(t) 40sin(5655t - 45o)V can you check if my answer is correct?Convert the following instantaneous currents to phasors, using cos(t) as the reference. Give your answers in both rectangular and polar form. (a) i(t)=5002cos(t30) (b) i(t)=4sin(t+30) (c) i(t)=5cos(t15)+42sin(t+30)
- An rms voltage of 22.2 V with a frequencyof 1.00 kHz is applied to a 0.290-mH inductor. (a) What is the rmscurrent in this circuit? (b) By what factor does the current changeif the frequency of the voltage is doubled? (c) Calculate the current for a frequency of 2.00 kHzfind the following : a) the peak voltage Vp b) the Peak to bottom Vpp c) the Time period d) The frequency e) the phase differneceFind the impedance Zab in the circuit seen in the figure. (Figure 1). Suppose that R = 10 Ω. Pt A. Express Zab in polar form. Pt B. Express Zab in rectangular form.