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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.
- A resistor of 20ohms and a capacitance of unknown value when connected. In in parallel across a 100V, 50Hz supply take a current of 6A. The combination is now connected across a 100V supply of unknown frequency and the current falls to 5.5A . What is the frequency?1)The value of the capacitance reactive power in VAR is? /2) The value of the capacitor in micro farad is?A resistor of 20 Ohms and a capacitance of unknown value when connected in in parallel across a 100V, 50Hz supply, take a current of 6A. The combination is now connected across a 100v supply of unknown frequency and the current falls to 5.5A. What is the frequency?
- A capacitor in series with a 20-KO resistance across a 10 V ac source. What size C is needed for equal voltage across R and Xc at frequency of 100 Hz and 100 KHz.4. The current through a 10-mH inductor is 10e“²A. Find the voltage and the power at t = 3s. Ans.-11.16 mV and -24.89mWA capacitor C is connected in parallel with a resistance R across a 60-V, 100 Hzsupply. The supply current is 0.6 A at a power factor of 0.8 leading. Calculatethe value of R and C.
- A 500 nF capacitor is connected in series with a 100 kohm resistor and the circuit is connected to a 50V, d.c. supply. Calculate the initial value of current flowing, the value of current 150 ms after connection, the value of capacitor voltage 80 ms after connection, and the time after connection when the resistor voltage is 35 V.An inductance coil consumes 500W of power at 10A and 110V and 60HZ. Determine the resistance and the inductance of the coilQ2: Find the voltage in all capacitor in figure below where the capacitance in uF C1 300 C4 400v 100 C2 C5 60 100