- 1(current)
Q. No.
An inductor of \(20~\text{mH}\), a capacitor of \(100~\mu \text{F}\), and a resistor of \(50~\Omega\) are connected in series across a source of emf, \(V=10 \sin (314 t)\). What is the power loss in this circuit?
1. \( 0.79 ~\text{W} \)
2. \( 0.43 ~\text{W} \)
3. \( 2.74 ~\text{W} \)
4. \( 1.13 ~\text{W}\)
Subtopic: Â Power factor |
 55%
Level 3: 35%-60%
NEET - 2018
Hints
Links
The potential differences across the resistance, capacitance and inductance are \(80\) V, \(40\) V and \(100\) V respectively in an \(LCR\) circuit.
What is the power factor of this circuit?
1. \(0.4\)
2. \(0.5\)
3. \(0.8\)
4. \(1.0\)
Subtopic: Â Power factor |
 82%
Level 1: 80%+
NEET - 2016
Hints
Links
A small-signal voltage \(V(t)= V_0 \text{sin}(\omega t)\) is applied across an ideal capacitor \(C\): Find the correct statement from the options given below:
| 1. | over a full cycle, the capacitor \(C\) does not consume any energy from the voltage source. |
| 2. | current \(I(t)\) is in phase with voltage \(V(t)\). |
| 3. | current \(I(t)\) leads voltage \(V(t)\) by \(180^{\circ}\). |
| 4. | current \(I(t)\), lags voltage \(V(t)\) by \(90^{\circ}\). |
Subtopic: Â Power factor |
 76%
Level 2: 60%+
NEET - 2016
Hints
An inductor \(20~\text{mH}\), a capacitor \(50~\mu \text{F}\), and a resistor \(40~\Omega\) are connected in series across a source of emf \(V= 10\text{sin}340t\). The power loss in the AC circuit is:
| 1. | \(0.67~\text{W}\) | 2. | \(0.76~\text{W}\) |
| 3. | \(0.89~\text{W}\) | 4. | \(0.51~\text{W}\) |
Subtopic: Â Power factor |
 51%
Level 3: 35%-60%
NEET - 2016
Hints
Links
- 1(current)
Q. No.
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