The current source supplies i,(t)=3 cos4t ampere current. Calculate vR(t) using the Mesh Current Method. What is the complex power delivered by the capacitor? 2 H 0.5F
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- Three capacitors having capacitance values of 20F,40F, and 50F are connected in parallel to a 60 - Hz power line. An ammeter indicates a circuit current of 8.6 amperes. How much current is flowing through the 40F capacitor?A 15-F AC capacitor is connected in series with a 50 resistor. The capacitor has a voltage rating of 600 WVDC. The capacitor and resistor are connected to a 480-V, 60-Hz circuit. Is the voltage rating of the capacitor sufficient for this connection?An AC circuit contains a 24 resistor, a 15.9-mH inductor, and a 13.3F capacitor connected in parallel. The circuit is connected to a 240-V, 400-Hz power supply. Find the following values. XL=XC=IR=AIL=AIC=AP=WVARsL=VARsC=IT=AVA=PF=%=
- You are an electrician working in an industrial plant. You discover that the problem with a certain machine is a defective capacitor. The capacitor is connected to a 240-volt AC circuit. The information on the capacitor reveals that it has a capacitance value of 10 mF and a voltage rating of 240 VAC. The only 10-mF AC capacitor in the storeroom is marked with a voltage rating of 350 WVDC. Can this capacitor be used to replace the defective capacitor? Explain your answer.You find that a 25-F capacitor connected to 480 VAC is defective. The storeroom has no capacitors with a 480-VAC rating. However, you find two capacitors rated at 50 F and 370 VAC. Can these two capacitors be connected in such a manner that they can replace the defective capacitor? If yes, explain how they are connected and why the capacitors will not be damaged by the lower voltage rating. If no, explain why they cannot be used without damaging the capacitor.Using the series circuit in Figure 3 consisting of a voltage source V, the resistor R and the fully uncharged capacitor C, how to find the value of the capacitance C considering as known data the time constant of the circuit T and the value of the resistor R? V ww R
- 5. A 20-ohm resistor and a capacitor are connected in series with a battery of 60 volts. At t = 0, there is no charge on the capacitor. Find the capacitance if the current at t = 5 seconds is 3/e amperes. Ans. 0.05 Farads2) a)For the following circuit find the total capacitance and inductance and hence find the total impedance of the circuit. V1 230V/50Hz E R1 350 C1 4700pF HE C2 10nF HH C3 47nF C4 220nF HH L1 72mH L2 32mH All Resistance in OhmsA 150 µF and 100 µF capacitors are connected in series and across a 100 sin (wt + 30*) voltage. Write the equation of the current in mA. 25wsin(wt+30') 6wsin(wt+30') 25wsin(wt+120') 6wsin(wt+120')
- . An inductance of 15mH has a current drawing I = 15sin(650t - 300) A. Determine the equation of voltage in the circuitA series resistance - capacitance ( R-C ) circuit is connected to a 230V, 60 - cycle source. If the power taken by the circuit is 4, 800W and the voltage drop across the resistor is 115V.Calculate the capacitance of the capacitor. 600.36 microfarad 1,500.05 microfarad 556.096 microfarad 250.94 microfaradA series R–L–C circuit comprises a 5µF capacitor, a 4ohm resistor and a variable inductance L. The supply voltage is 10∠0◦ V at a frequency of 159.1 Hz. The inductance is adjusted until the p.d. across the 4 ohm resistanceis a maximum. Determine for this condition (a) the value of inductance, (b) the p.d. across each component and (c) the Q-factor of the circuit.