b) A capacitor C is connected in series with a 40 Q resistor across a supply of frequency 60 Hz. A current of 3A flows and the circuit impedance is 50 N, Calculate: (i) the value of capacitance, C, (ii) the supply voltage, (iii) the phase angle between the supply voltage and current, (iv) the p.d. across the resistor, (v)

Find the equivalent inductance of the circuit shown in the figure. 0.06 H 0.04 H 0.06 H 0.06 H

Use nodal analysis to determine current in the capacitor in the figure below. Choose the right answer.

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.

The voltage applied to the metal grid of CRO is negative with respect to cathode. Select one: O True O False The sinusoidal current waveform having the maximum value of 30 A. then the R.M.S value is Three coils each having resistance of 29 0 are connected in star across 436 V. 50 Hz supply. Then the total power consumed is O 19665.10 W O 3784.66 W O 755.20 W O 226.05 W

Two 10 uF capacitors have been connected in parallel across a 230 V 50 Hz AC supply. The current drawn from the supply will be approximately: Select one: a. 1.44 A b. 0.36 A c. 11.5 A O d. 23.0 A

Determine ZT for the circuit if inductive reactive is 10220 and resistance is 9850. Answer:

In the circuit shown, Determine the following: a) The equivalent reactance and its nature (inductive or capacitive). b) The voltage across each inductor and capacitor. c) The equation of the current. d) The impedance of the circuit.

Through a capacitor of capacitance 15 micro-farad with a frequency of 50 hz. Compute its reactance

Three capacitors A, B and C are connected in series across a 200 V d.c. supply. The p.d.s. across the capacitors are 40 V, 32 V and 128 V respectively. If the capacitance of A is 8 µF a) what are the capacitances (µF) of B? b) what are the capacitances (µF) of C?