Chapter 2, Problem 2.9P

By series and parallel combinations find the equivalent capacitance for this circuit. 15€ Cequivalent 6f 6f 6E 12F

Q: Design of AM system 1- Draw the block diagram for AM transmitter 2- Draw the output waveform of transmitter and what is the device measure the output? 3- Draw the spectrum frequency for the output of transmitter 4- Why we use the modulation? Do

The following circuit is at steady state for t<0. At t=0 sec, the switch is open. Let R₁ =14 ohms, R₂=14 ohms, R3-4 ohms, C₁-1 F, Vx-16 V and Ix-7 A. Find Vc1 (0.8 sec) and voltage across resistor R3 = v(1.4 sec), as follows: Vc1(0) in volts= Vc1(00) in volts= Rth in ohms= Vc1(t-0.8 sec) in volts= v(t-1.4 sec) in volts= Vx w t=0 The relative tolerance for this problem is 10 %. + www R₂ Vit R3 + Vc1(t) C₁

For the circuit shown, the switch opens at t=0 sec. Find i(t=1.5) value as follows. Let R1-12 ohm, R₂-8 ohm, L=0.6 H, V≤1-10 V and V2-8 V, and determine: i(0) = A A i(∞0) = Rth = i(1.5 sec) Ω A R₁ L i(t) VS2 R2 w The relative tolerance for this problem is 9 %. + V S1

You must have noticed that, when a major appliance is turned on (such as an AC unit, garbage disposal, etc.), your house lights dim momentarily. This is the effect of the RL circuit formed by the inductance and resistance of the transmission line and the loads (light bulbs, appliance, etc.) In fact, even a single straight wire has inductance. The inductance (and the resistance) of a long transmission line can be problematic if the system is not properly designed. The voltage on a power transmission line is alternating current but the effect of transmission line can be simulated by a DC circuit as shown below, where R=0.005 2 /km and L=0.04 H/km representing the resistance and inductance of the transmission line per km relationship that is with the ration: L-8 R. In the circuit, Right =160 represents light bulb resistances, R₁ = 7 represents the resistance of a 'major appliance', and the switch indicates when the appliance is turn on. Alice, a newly hired engineer, needs to determine…

For the circuit shown, let Let R₁-3 ohms, R2-7 ohms, C₁-2 F, VX-20 V and Ix-1 A. Calculate the capacitor voltages, as shows, at time t= (-1.3) sec and at t=1.9 sec. In particular find: V(0) = V(∞) = Rth V(t=-1.3 sec) in volts- V(t-1.9 sec) in volts- C1 HH +V(t) = - (V) (V) (S2) (V) 3 (V) Vx +1 R1 t=0 The relative tolerance for this problem is 9 %. R₂

In the circuit below, the switch moves from position 1 to position 2 at t=0. Select the closest waveform which represents the inductor current: 2 R 2R V₁ t=0 0 t=0 (a) (d) t=0 (b) (e) 0 0 t=0 (c) t=0 요 (f) Note: choices are listed randomly; may not alphabetically ordered. (given during job interview question, with permission) waveform c waveform a O waveform d waveform e waveform b ○ waveform f t=0 R

Let R1-8 ohms, R₂-5 ohms, L₁-2 H, Vx=10 V, in the circuit shown, to calculate the inductor current at time t= (0.6 sec) and at t= 2 sec, as follows: i(0) = 1(00) - Rth= = i(0.6 sec) = i(2 sec) = R₁ (A) (A) (N) Vx 1=0 The relative tolerance for this problem is 9 %. (A) (A) R2 ell 4₁

The following circuit is at steady state for t<0. At t=0 sec, the switch opens. Let R₁=102, R₂-12 2, R3=6 2, R4-6, C=0.9 F and V₂-14 V, and find V(t) at t =2.206 sec, as follows: V(0) = (V) V(∞0) = RTh = V(2.206) = (V) (Ω) (V) {To avoid errors, and meet allowed tolerance, carry-out your intermediate numerical values as much as possible than round only the entered values to 3 significant digits} R₁ w V (+ R₂ ww + C EV(t) R3 The relative tolerance for this problem is 10 %. Question Help: Written Example I R4 www 2=0