3. A resistor and a capacitor are connected in parallel across a 120 V DC source. Determine voltages across the resistor and the capacitor.
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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?An inductance coil consumes 500W of power at 10A and 110V and 60HZ. Determine the resistance and the inductance of the coilDescribe the behavior of the voltage across the resistor with time as thecapacitor charges. Explain the reason for this behavior.
- 1. A purely resistive circuit the current is leading by 90° with respect to voltage. 2. A purely inductive circuit the current is lag behind the voltage by 90°. 3. A purely capacitive circuit the current is lead by 90° with respect to the voltage. 4. A capacitor element stored magnetic energy. 5. An inductor element stored electrical energy. 6. Resistor elements consume power. 7. Angle between current and voltage is called power. 8. The power factor angle for a purely resistive is zero. 9. The power factor angle for a purely inductive load is -90°. 10. The power factor of a purely capacitive is leading.Step 1 : Show that the voltage division rule for two capacitors in series as in the figure Step 2: For two capacitors in parallel as in the second figure, show that the current division rule is:What is the equivalent resistance ?? and what is the total inductance ??
- A capacitor C is connected in parallel with a resistor R across a 120 V, 200 Hz supply. The supply current is 2 A at a power factor of 0.6 leading. Determine the values of C and R.An inductor and a resistor are in series with a sinewave voltage source. The frequency is set so that the inductive reactance is equal to the resistance. If the frequency is increased, then options: Voltage across the inductor= Source Voltage Voltage across the inductor> Voltage across the resistor Voltage across the inductor= Voltage across the resistor Voltage across the resistor > Voltage across the inductorC) A 25 A electrodynamic ammeter is controlled by a spring having a constant of 5.7295x 10-6 Nm/rad. The full scale deflection is 110°. Determine the inductance of the instrument while measuring a current of 20 A. The mutual inductance at 0° deflection is 4 u H and the change in mutual inductance is linear with the deflection.
- A 20-µF (C1) and a 40-µF (C2) capacitor are connected in parallel to a 480-V, 60-Hz source. What is the inductive reactance and current flow through C1? What is the inductive reactance and current flow through C2?A resistor & a capacitor are connected in series across 230V, ac supply. The current taken by the circuit is 4 A for 50 Hz frequency. The current is reduced to 2 A, when the frequency of supply is decreased to 40 Hz. Determine the value of resistor & the capacitor.a)For the inductive element of Figure 1 , the current in phasor form is B) the voltage in phasor form for figure 1 is C)the impedance of the inductor for figure 1 is