Given thee capacitors C 20 aF. C15 F, and C30 F. what amangement of paeralel and series connections with a 12V battery wil give the minimum vohage drop across the 2.0-pF capacitor?
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- 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.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?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.
- You 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?What frequency must be applied to a 33-mH inductor to produce an inductive reactance of 99.526 ?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?
- You are a journeyman electrician working in an industrial plant. Your task is to connect an inductor to a 480-V, 60-Hz line. To determine the proper conductor and fuse size for this installation, you need to know the amount of current the inductor will draw from the line. The nameplate on the inductor indicates that it has an inductance of 0.1 H. An ohmmeter reveals that it has a wire resistance of 10 . How much current should this inductor draw when connected to the line?Solve for the (and refer to the image): - individual voltages - individual charges wherein Equivalent capacitance of the capacitor is 0.76 F Charge stored in the circuit is 45.50 C. And V= 60VUsing the 0.68 kilo Ohms, 3.3mH inductance, and 5V source, compute for the theoretical voltages across the resistor and inductor for 10 kHz and 60 kHz. Show the step-by-step computation. Express the voltages in polar form.
- Basic Electrical Engineering: Inductance and Capacitance You find that a 25-µF capacitor connected to a 480 V AC is defective. The storeroom has no capacitors with a 480 V AC rating. However, you find two capacitors rated at 50 µF and 370 V AC. Can these 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 damage to the capacitor.A. Find the equivalent capacitance of the combination shown in the figure. (C2 = 2µF, C3 = 3µF) B. Determine the charge on each capacitor, if there is a potential difference of 900V C. Determine the voltages across each capacitorAn emf source with E=100 V, a resistor with R=80 ohms, and a capacitance with C=4 uF are in series.connected. While the current is 0.9A during the loading of the capacitor, the load on the plates of the capacitor ishow big is it (in uC)?