What is the function of the holding 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.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?Consider the capacitor and its voltages for these two questions. a. What is the current i at 3s (in A)? b. What is the current i at 7s (in mA)? Please also answer the last question for checking.
- The figure on the side is showing how the voltage on the capacitor in an RC-circuit changes with time The time needed for the capacitor to lose half its maximum charge Select one: a. 40 sec b. 80 sec c. 20 sec d. 30 secExplain the behavior of the capacitor voltage and capacitor current at the instant the switch is closed. Explain the behavior of the capacitor current as the capacitor voltage Why did the current through the capacitor jumped to a certain value at the instant the switch is closed?A capacitor sensor consists of 3 charged parallel plates have breath of 500 mm. These plates are separated from each other by 7.5 mm. When, the middle plate is moving up by 0.25 mm. Assuming upper and lower plates kept fixed, calculate the following, i. Length of the capacitor plates, if the total change in capacitance is 1.190 pF ii. Values of C1 and C2.
- A capacitor is rated for 250 Vac. Can it be used in a DC circuit? If yes, what is the maximum DC voltage that the capacitor can be connected to?There is no energy stored in the circuit at the timethe current source is energized.1. a) Find Ia and Ib.2. b) Find ia and ib.3. c) Find Va, Vb, and Ic.4. d) Find va, vb, and vc.5. e) Assume a capacitor will break down whenever its terminal voltage is 1000 V. How long after the current source turns on willone of the capacitors break down?Find out voltage and charge of each capacitor of the following configuration. Note: Please do not handwriting
- If two capacitors of 15 and 20 microfarads are connected in series to a 600 volt supply, find (1) the voltage difference across each capacitor and (2) the charge across each capacitor.A capacitor is rated at 1000uF of capacitance. Ifits minimum value is 850uF, what is its maximumallowable value assuming it has a 15% tolerance?The following figure represents an RC-Circuit with the switch. In Figure A, the capacitor is initially uncharged. In Figure B, the capacitor is initially fully charged. 1) Draw and label the current direction immediately after the switch is closed for each figure. 2) Consider Figure A. What is the voltage across the capacitor as t → 0? Explain. 3) Consider Figure B. Is the voltage across the resistor increasing, decreasing or staying the same as t → 0? Explain. A) B) R C