(a) The circuit shown below has the following parameters: C1 = 17 µF, C2 = 8 µF, C3 = 5 µuF and V = 45 V. Determine: (i) Total Capacitance (ii) Voltage across each capacitance and (iii) Charge on each capacitance. %3D C1 HE C3 C2 >
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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?Assume that the current flow through the resistor, IR, is 15 A; the current flow through the inductor, IL is 36 A; and the circuit has an apparent power of 10,803 VA. The frequency of the AC voltage is 60 Hz. ET ER EL IT IR15A IL36A Z R XL VA10,803 P VARSL PF LAssume that the voltage drop across the resistor, ER, is 78 V, that the voltage drop across the inductor, EL, is 104 V, and the circuit has a total impedance, Z, of 20 . The frequency of the AC voltage is 60 Hz. ETITZ20VAPFER78VIRRPEL104VILXLVARsLL
- Fill in all the missing values. Refer to the formulas that follow. Resistance Capacitance Time constant Total time 150 k 100 F 350 k 35 s 350 pF 10 s 0.05 F 1.2 M 0.47 F 12F 0.05 s 86 k 1.5 s 120 k 470 pF 250 nF 100 ms 8 F 150 s 100 k 150 ms 33 k 4 F =RCR=CC=R Totaltime=5You are working in an industrial plant. You have been instructed to double the capacitance connected to a machine. The markings on the capacitor, however, are not visible. The capacitor is connected to 560 volts and an ammeter indicates a current of 6 amperes flowing to the capacitor. What size capacitor should be connected in parallel with the existing capacitor? What is the minimum AC voltage rating of the new capacitor? What is the minimum DC voltage rating of the new capacitor? What is the minimum KVAR size that can be used in this installation?A capacitor uses air as a dielectric and has a capacitance of 3 F. A dielectric material is inserted between the plates without changing the spacing, and the capacitance becomes 15 F. What is the dielectric constant of this material?
- Find the equivalent capacitance of given circuit between the point A and B) if the applied voltage across A-B, equal =5 VRMS , 1000 Hz. Note: Take the capacitance of each capacitor as C=680µF)Given the capacitance of four capacitors Ca= 30 µF, Cb = 10 µF, Cc = 40 µF and Cd = 12 µF. If Cb and Cc are connected in series and the series combination is connected in parallel with Cd then the whole combination is connected in series with Ca, Calculate (a) the equivalent capacitance (b) the voltage across each capacitor if the circuit is supplied by 250 volts DC source (c) the charge on each capacitor.Capacitance= 4uF , Hence time constant is 5.33μs For the capacity value, calculate the estimated time to come to the final state.Plot capacitor current and voltage graphs and show if it works in harmony with the time constant you calculated. NOTE: if you want you can use falstad online circuit simulator.
- Q1 (True/False): A) The current through the capacitor is inversely proportional to the derivative of the voltage across it: Is it true or false? B) In a typical electronic circuit the capacitor blocks DC and couplest he AC to the next stage of the circuit: Is it true or false? C) The more the value of the stray capacitance , the better it is: Is it true or false?Given the capacitance of four capacitors Ca= 30 µF, Cb = 20 µF, Cc = 40 µF and Cd = 10 µF. If Cb and Cc are connected in parallel and the parallel combination is connected in series with Ca and the combination is further connected in parallel with Cd, calculate (a) the equivalent capacitance (b) the voltage across each capacitor if the circuit is supplied by 240 volts DC source (c) the charge on each capacitor.1.1 A capacitor which has an internal resistance of 10Ω and a capacitance value of 160uF is connected to a supply voltage given as v(t) = 100sin(314t) Calculate the peak current flowing into the capacitor