Phasor

Q. 1. In an A.C circuit with an inductor and a resistor, current leads source voltage.
2. In an R.L.C circuit, current may lead source voltage.
3. In an A.C circuit with a capacitor and a resistor, current leads source voltage.
4. Up on increasing the frequency of a source, power factor decreases.

1. All statements are true.
2. 2 and 3 are true.
3. 2, 3 and 4 are true.
4. 1 and 4 are true.

Q. 1. In an A.C circuit with an inductor and a resistor, current leads source voltage.
2. In an R.L.C circuit, current may lead source voltage.
3. In an A.C circuit with a capacitor and a resistor, current leads source voltage.
4. Up on increasing the frequency of a source, power factor decreases.

1. All statements are true.
2. 2 and 3 are true.
3. 2, 3 and 4 are true.
4. 1 and 4 are true.

Q. The values of maximum current and impedance in the given circuit are

1. $1amp,300\Omega$
2. $1amp,150\Omega$
3. $3amp,100\Omega$
4. $6amp,50\Omega$

Q. The values of maximum current and impedance in the given circuit are

1. $1amp,300\Omega$
2. $1amp,150\Omega$
3. $3amp,100\Omega$
4. $6amp,50\Omega$

Q. For the circuit shown in below figure, current in the inductor is $0.8\text{A}$ while in the capacitor is $0.6\text{A}$. What is the current drawn from the source?

1. $0.1\text{A}$
2. $0.3\text{A}$
3. $0.6\text{A}$
4. $0.2\text{A}$

Q. For the circuit shown in below figure, current in the inductor is $0.8\text{A}$ while in the capacitor is $0.6\text{A}$. What is the current drawn from the source?

1. $0.1\text{A}$
2. $0.3\text{A}$
3. $0.6\text{A}$
4. $0.2\text{A}$

Q. An AC circuit consists of an inductor of inductance $0.5\text{H}$ and a capacitor of capacitance $8\mu F$ in series. The current in the circuit is maximum, when the angular frequency of the source is -

Impedance for AC LC circuit is given by $Z=|X_L-X_C|$.

1. $600\text{rad/s}$
2. $800\text{rad/s}$
3. $500\text{rad/s}$
4. $700\text{rad/s}$