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Questions and Answers
In a circuit with a 40 µF capacitor in series with a coil of resistance 8 Ω and inductance 80 mH connected to a 200 V, 100 Hz supply, what is the circuit impedance?
In a circuit with a 40 µF capacitor in series with a coil of resistance 8 Ω and inductance 80 mH connected to a 200 V, 100 Hz supply, what is the circuit impedance?
- 10 Ω
- 25 Ω
- 15 Ω (correct)
- 20 Ω
What is the phase angle between voltage and current in an R-L-C series circuit if X_L = X_C?
What is the phase angle between voltage and current in an R-L-C series circuit if X_L = X_C?
- 45 degrees
- 180 degrees
- 0 degrees (correct)
- 90 degrees
When X_L = X_C in an R-L-C series circuit, what is the relationship between the applied voltage V and the current I?
When X_L = X_C in an R-L-C series circuit, what is the relationship between the applied voltage V and the current I?
- V L = I
- V L < V C
- V L > V C
- V L = V C (correct)
What is the formula to calculate the resonant frequency fr in an R-L-C series circuit?
What is the formula to calculate the resonant frequency fr in an R-L-C series circuit?
What is the maximum current possible in an R-L-C series circuit at resonance?
What is the maximum current possible in an R-L-C series circuit at resonance?
If three impedances are connected in series across a 100 V, 2 kHz supply, what is the total impedance of the circuit?
If three impedances are connected in series across a 100 V, 2 kHz supply, what is the total impedance of the circuit?
What happens to the circuit impedance when the resistance in an R-L-C series circuit increases?
What happens to the circuit impedance when the resistance in an R-L-C series circuit increases?
How does the phase angle change as the frequency of the supply in an R-L-C series circuit deviates from resonance?
How does the phase angle change as the frequency of the supply in an R-L-C series circuit deviates from resonance?
What happens to the voltage across the coil when X_L > X_C in an R-L-C series circuit?
What happens to the voltage across the coil when X_L > X_C in an R-L-C series circuit?
$R$ and $L$ values in an R-L-C series circuit are adjusted such that $X_L = X_C$. What is the value of the circuit phase angle?
$R$ and $L$ values in an R-L-C series circuit are adjusted such that $X_L = X_C$. What is the value of the circuit phase angle?
