at: During this COVID-19 pandemic, how will you design your ideal capacitor which is possible to solve on country's problem regarding the energy crisis? Draw it and write a description about your Own-Designed- Capacitor (ODC): Pandemic Edition.
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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?4. In what form is the energy of a capacitor stored?a) We assume that the switch is on. Calculate the reactance values and find the charging current in the circuit below. Is the circuit capacitive or inductive? Show that the voltage across the capacitance can be slightly larger than the source voltage U. (This is called the Ferranti effect and means that we can get a voltage rise beyond overhead lines with small loads. This is mostly relevant at the highest voltage levels. The frequency f is 50Hz, and assume voltage U= √2⋅24kV
- a) Define Potential Gradient? b) Write any four name of the practical types of capacitor? c) How do you discharge the capacitor?A resistor and a capacitor are connected in series with a variable inductor. When the circuit is connected to a 550V, 40 hz supply, the maximum current given by varying the inductance is 15 A. At this current, the voltage drop across the capacitor is 2800 V. Calculate the power taken and power factor of the circuit when across a 250 V, 60 Hz source.low voltage systems What is the general reason for selecting the capacitor voltage with a value greater than 400 V (such as 415,445 V) in Reactive Power Compensation? a) Reduce losses b) Harmonics C)Current decrease d) Voltage drop
- A resistor and a capacitor are connected in series with a variable inductor. When the circuit is connected to a 240 – V, 50 – Hz supply, the maximum current given by varying the inductance is 0.5 A. At this current, the voltage across the capacitor is 250 V. Calculate the values of (a) the resistance, (b) the capacitance, and (c) the inductance. draw circuit diagrama) With switch J2 open, close switch J1. Estimate the time it takes to do it. Obtain the equations for the voltage and current of the capacitor. Determine the energy stored by the capacitor. b) Open switch J1, close switch J2. Estimate the time it takes to do it. Obtain the equations for the voltage and current of the capacitor.Optional practice problems: 1) The figure below shows a parallel-plate capacitor that is connected to a battery (assume negligible resistance in the wires that connect the capacitor to the battery). a) While the battery is still charging the capacitor, rank the potential at points A-E, from lowest to highest BC D E b) After the capacitor is fully charged, rank the potential at points A-E, from lowest to highest. c) The battery is now disconnected from the capacitor and a piece of dielectric material is inserted between the plates. Is the potential difference between points A and E, than, the same as or larger than the potential difference across the battery? Explain your smaller reasoning
- QUESTION 1 a) State two (2) main properties or acts of each capacitor and inductor in RL and RC cireuit analysis ( voltage and current ). b) Define what is capacitor and inductor. Support the answers with an appropriate illustration of capacitor and inductor basic structure. c) Natural response happens to all passive storage element component. Explain natural response for circuit behaviour for a capacitor with an appropriate illustration. d) The switch in circuit Figure 1 has been closed at t 0. 6 A 10 0 i(t) 7.5 H Figure 1: First Order RL CircuitWhat is the importance of resistor, multimeter, and capacitor? How can we apply its importance to the future?Fill in the blanksadd, capacitance, charge capacity, dielectric, dissipate, electrical circuits, , passive, plates,proximity, storesA capacitor is a 1 …………. two-terminal electrical component that 2 ……… potential energy in anelectric field. The effect of a capacitor is known as 3. …………... While some capacitance exists betweenany two electrical conductors in 4. …………… in a circuit, a capacitor is a component designed to 5.…… capacitance to a circuit. The capacitor was originally known as a condenser.The physical form and construction of practical capacitors vary widely and many capacitor types are incommon use. Most capacitors contain at least two electrical conductors often in the form of metallic 6.………… or surfaces separated by a 7. ………medium. A conductor may be a foil, thin film, or anelectrolyte. The nonconducting dielectric acts to increase the capacitor's 8. ………… ………. Materialscommonly used as dielectrics include glass, ceramic, plastic film, paper, mica, and oxide…