1) Ifa capacitor is connected to the battery and you double the area of the capacitor, what happens to the capacitor voltage, charge, electric field and potential energy? Verify you answer theoretically (show equations).
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- 4. In what form is the energy of a capacitor stored?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?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?
- Can current flow through a 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.In reference to the load, how are capacitors connected to help prevent voltage spikes and surges? Are capacitors connected in parallel or in series with the load?
- 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?A pure capacitive circuit is connected to a 480-volt, 60-Hz power source. An ammeter indicates a current flow of 24 amperes. The circuit current must be reduced to 16 amperes by connecting a second capacitor in series with the first. What is the value of the existing capacitor? What value capacitor should be connected in series with the original capacitor to limit the circuit current to 16 amperes?
- When the switch is in position 1, the circuit will charge the capacitor. Determine the equations for v(t) and i(t) for the charge phase and determine the voltage and current at time, t = 31 ms, in the charge phase.10 Which of the following statements is one of the properties of capacitors connected in series? Select one: a. The voltage drop across each capacitor is equal to the total supply voltage. b. The total charge of the entire series connection is equal to the charge for each individual capacitor. c. The total capacitance is equal to reciprocal of each capacitor.Web/Home F4 Search F8 F9 c) Some capacitors are marked 45micro farad save working voltage 25V. On a circuit diagram show how a number of these capacitors may be connected to show a capacitor of capacitance; 45 micro farads safe working voltage of 50 volts. 75 micro farads safe working voltage of 25 volts. 1. I.