Question 5. Consider the circuit below. Answer the questions that follow. 492 20mH m 2500µF 100cos(100t)V + (1) 4cos(100t+(/2))A 292 Vo (5.a) [4 marks] Redraw the circuit by converting the sources to phasors and the passive components (inductors, capacitors, and resistors) to impedances. Note: the phase of the current source is given in radians; please convert it to degrees. (5.b) [6 marks] Compute Vo in volts (as a phasor).

Pls. write solution neatly

A resistor & a capacitor are connected in series across 230V, ac supply. The current taken by the circuit is 4 A for 50 Hz frequency. The current is reduced to 2 A, when the frequency of supply is decreased to 40 Hz. Determine the value of resistor & the capacitor.

R₁ (10 m) 0.2 H ми 00000 &₁ = 50V R₂ (200) E₂ = 30V

A resistor of 20 Ohms and a capacitance of unknown value when connected in in parallel across a 100V, 50Hz supply, take a current of 6A. The combination is now connected across a 100v supply of unknown frequency and the current falls to 5.5A. What is the frequency?

(i) For the circuit below, draw the output waveforms for both the given input wave- forms. (ii) How can you convert this circuit into a half-bridge by removing any two compo- nents? Please draw a circuit diagram. Also, draw the current flow through the modified circuit. This can be done by annotating the modified circuit diagram. M (i) (ii)

Consider a circuit with a pull-down resistor in parallel to a component. Compare a resistor with higher resistance value to a resistor with lower resistance value in the parallel path. Which resistor value will pull down the potential more, relative to ground, at the high side of the component? They will pull the potential di [ Select] They will pull the potential down equally, because resistors in series have equal voltage across them, regardless of resistance value. The lower-value resistor. There is not enough information to correctly answer this question. The higher-value resistor.

For the circuit below assuming an ideal switch, preform transient analysis to predict the voltage across resistor, R2 and plot the results. The inductor will have zero current as initial condition. L1 0.005 2 U1 100mH R1 1k V1 20Vdc R2 100

The current through a 5-mH inductor is shown in the Figure. Determine the sign and magnitude of the voltage across the inductor at t = 5 ms. Enter your answer in magnitude of volts with the current sign.

A 0.185H inductor is connected in series with a 99 Ohm resistor and an ac source.  The voltage across the inductor is vL = -(11.5V)sin[(470rad/s)t].  Derive an expression for the voltage vR across the resistor.  What is vR at 1.85 ms?