4.47 Determine the equivalent impedance seen by the mun source vs in Figure P4.47 when: ee. vs(t) = 10 cos(4,000t + 60°) V R = 800 mH, N R2 = 500 nF e %3D L 200 mH C = 70 nF R2 VS R1 A.83 Figure P4.47

QUESTION 4 For the circuit in Figure Q4a, draw the phasor domain equivalent circuit. Given that Is(t)=2 cos 1000t A. Then determine the steady state voltage Vs(t). a) b) + i) ii) Vs(t) ZT 992 m 12mH For the circuit in Figure Q4b, determine; Vs = 85 215° Vrms Ve Figure Q4a The phasor current, I, and the phasor voltage, Vx The real power and the reactive power of the source. 0.25mF 10 Ω – j30 Ω 2 - ww 20 Ω j10 Ω -j30 2 1092 Figure Q4b 20 Ω j20 Ω 1,(1) lmF

For the circuit shown in Figure (4.a): i) a) Find the voltage across the capacitor in polar form. ii) Draw the phasor diagram relationship of Vc and Vs. iii) Is this circuit pre-dominantly inductive or capacitive? Why? R1=1kN X1 = 5000 Vs= 50 0 Xe = 5000 R2=1kn

Draw the representation of ideal DC sources with (V-I) characteristics.

Determine the initial and final conditions for thecircuit of Figure P5.21.

THE SUBJECT IS BASIC ELECTRICAL ENGINEERING Chapter 14. Phasor Algebra

Give a description of capacitive reactance and back up your description with examples/evidence.

(b) Design the circuit by finding the value for the capacitor, C and the line voltage Vpri(rms) to the circuit to produce the output as shown in Figure Q1(b).

How active components are different from passive electronic components explain with examples. How are electrolytic capacitors constructed? Explain how they are categories as polarized and non-polarized electrolytic capacitors.

If the waveform shown in Figure P4.15 is thevoltage across a capacitor plotted as a function of timewithvPK = 20V, T = 40 μs,  C = 680nFdetermine and plot the waveform for the currentthrough the capacitor as a function of time.