Phasor diagram given below represents which circuit?

 

1. Purely capacitive circuit

2. Purely inductive circuit

3. Purely resistive circuit

4. RC circuit

An inductor of inductance \(L\), a capacitor of capacitance \(C\) and a resistor of resistance \(R\) are connected in series to an AC source of potential difference \(V\) volts as shown in Figure. The potential difference across \(L\), \(C\) and \(R\) is \(40~\text{V}\), \(10~\text{V}\) and \(40~\text{V}\), respectively. The amplitude of the current flowing through the \(LCR\) series circuit is \(10\sqrt{2}~\text{A}\). The impedance of the circuit will be:

A series \(LCR\) circuit containing \(5.0~\text{H}\) inductor, \(80~\mu \text{F}\) capacitor and \(40~\Omega\)$\mathrm{}$ resistor is connected to \(230~\text{V}\) variable frequency AC source. The angular frequencies of the source at which power transferred to the circuit is half the power at the resonant angular frequency are likely to be:

Graph given below shows variation of voltage and current with phase for an AC circuit. What is the phase difference between current(i) and voltage(v)?

1. 0

2. $\frac{\mathrm{\pi }}{6}$

3. $\frac{\mathrm{\pi }}{4}$

4. $\frac{\mathrm{\pi }}{2}$

Graph given below shows variation of voltage and current with phase for an AC circuit. Then the circuit is predominantly-

1. Capacitive

2. Inductive

3. Resistive

4. All of the above

The graph given below shows the variation of voltage and current with phase for an AC circuit. The circuit is:

1. Purely capacitive circuit

2. Purely inductive circuit

3. Purely resistive circuit

4. RC circuit

Figure shows the variation of peak current i_m with angular frequency $\omega$ for a LCR series circuit for different values of resistor R. Then the resonant frequency is-

1. $\frac{1\times {10}^6}{2\mathrm{\pi }}$

2. $\frac{2\times {10}^6}{2\mathrm{\pi }}$

3. $\frac{3\times {10}^6}{2\mathrm{\pi }}$

4. $\frac{4\times {10}^6}{2\mathrm{\pi }}$

In the phasor diagram given below,  phase difference between current and voltage, $\varphi \ne \frac{\mathrm{\pi }}{2}$. Then the circuit is-

1. Purely capacitive circuit

2. Purely inductive circuit

3. Purely resistive circuit

4. LCR circuit

The phasor diagram given below represents a series LCR  circuit. The circuit is predominantly-

1. Capacitive

2. Inductive

3. Resistive

4. All of the above