For the arrangement shown in Fig. 2 find (a) the equivalent circuit capacitance and (b) the voltage across each capacitor and (c) the charge on each capacitor. 4.5 μF 4.5μF 4.5 μF HHH 1μF 1μF HHH 500 Vo 3μF HH
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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?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.
- 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?What frequency must be applied to a 33-mH inductor to produce an inductive reactance of 99.526 ?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 following: a. Equivalent capacitance of the combination b. Charge on each capacitor c. Charge on each combination1. Find the voltages across the following components (a and b) after 1 second. The Capacitor is initially charged at 10V while the voltage source is 1V. Resistor R is 103 ohm while capacitor C is 1mF. a. Capacitor C b. Resistor R c. What is the best 1st order DE Method applicable to this problem?a) Obtain the equivalent capacitance in pF b) Determine the charge Q1, Q2, and Q4 (nC) at the capacitor C1, C2, and C4 c) Solve the voltage (V) across C1, C2, C3, C4 (USE 2 DECIMAL PLACES FOR THE FINAL ANSWERS)
- Find the equivalent capacitance with respect to the terminals a, b Determine the the initial voltage drop for the equivalent capacitance with respect to the terminals a, bFind the equivalent capacitance with respect to the terminals a,b Determine the the initial voltage drop for the equivalent capacitance with respect to the terminals a, bObtain the equivalent capacitance in pF. Determine the charge Q1 (nC) at the capacitor C1. Determine the charge Q2 (nC) at the capacitor C2. Determine the charge Q4 (nC) at the capacitor C4. Solve the voltage (V) across C1. Solve the voltage (V) across C2. Solve the voltage (V) across C3. Solve the voltage (V) across C4. use 2 decimal places for the answer