11 an R-L circuit contains a resistor and an inductor in series. The resistor has a value of 6.5 ohms. The circuit is connected to 120 v and has a current flow 12 A. what is the inductive reactance of this circuit?
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- An RC series circuit is connected to a 120-V, 60-Hz power source. The resistor is 25 and has a voltage drop of 65 volts. What is the capacitance of the capacitor?A series circuit consists of a resistor, a coil, and a capacitorconnected across a 300V, 60Hz AC source. The current drawn is 20A.The voltage across the resistor is 60V, that across the coil is 260V andthat across the capacitor is 100V. The resultant voltage across the coiland the capacitor is 254.56V. Determine (a) the resistance of theresistor, (b) the resistance and inductance of the coil, and (c) theresistance and capacitance of the capacitor.An AC circuit contains a 24-Ω resistor, a 15.9-mH inductor, and a 13.3-µF capacitor connected in parallel. The circuit is connected to a 240-V, 400-Hz power supply. Find the following values. XL = XC = IR = IL = IC = P = VA R sL = VA R sC = IT = VA = PF = ∠ θ =
- Which of the following is true about all series ac circuits?(a) The voltage across any circuit element is a maximumwhen the current is a maximum in that circuit element.(b) The current at any point in the circuit is always thesame as the current at any other point in the circuit.(c) The current in the circuit is a maximum when thesource ac voltage is a maximum.(d) Resistors, capacitors, and inductors can all change thephase of the current.A 0.185H inductor is connected in series with a 99 Ohm resistor and an ac source. The voltage across the inductor is vL = -(11.5V)sin[(470rad/s)t]. Derive an expression for the voltage vR across the resistor. What is vR at 1.85 ms?A resistor of R = 50Ω resistance is in series with a capacitor of C = 150μF. At t= 0, it is suddenly connected to a source of dc voltage of 25V. Determine the current in the circuit at any time t. Determine the current and the voltages across each element at t = 2τ.
- A resistance RC and a 4 ohms capacitive reactance are in series and the combination isparallel to a 10 ohms resistance. What value of RC will yield a circuit phase angle of 450 ?.For the circuit shown in Figure (4.a): i) Find the voltage across the capacitor in polar form. ii) Draw the phasor diagram relationship of Vc and Vs. iii) Is this circuit pre-dominantly inductive or capacitive? Why?Basic Electrical Engineering: Inductance and Capacitance You are an electrician working in an industrial plant. You discover the problem with a certain machine is a defective capacitor. The capacitor is connected to a 240-V AC circuit. The information on the capacitor reveals that it has a capacitance value of 10 µF and a voltage rating of 240 V AC. The only 10-µF capacitor in the storeroom is marked with a voltage rating 350 VDC. Can this capacitor be used to replace the defective capacitor? Explain your answer.