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Questions and Answers
What is the formula for impedance in an RLC series circuit?
What is the formula for impedance in an RLC series circuit?
- $Z=\sqrt{R^2 + (X_L + X_C)^2}$
- $Z=\sqrt{R^2 - (X_L + X_C)^2}$
- $Z=\sqrt{R^2 + (X_L - X_C)^2}$ (correct)
- $Z=\sqrt{R^2 - (X_L - X_C)^2}$
What is the condition called when the impedance is minimum and equal to resistance in an RLC series circuit?
What is the condition called when the impedance is minimum and equal to resistance in an RLC series circuit?
- Series resonance condition (correct)
- Inductive resonance condition
- Parallel resonance condition
- Capacitive resonance condition
What does the power factor, $\cos \phi$, represent in an RLC series circuit?
What does the power factor, $\cos \phi$, represent in an RLC series circuit?
- $\frac{1}{Z}$
- $\frac{Z}{R}$
- $\frac{R}{Z}$ (correct)
- $\frac{1}{Y}$
What happens to inductive and capacitive reactance at series resonance in an RLC circuit?
What happens to inductive and capacitive reactance at series resonance in an RLC circuit?
What is the formula for admittance, Y, in an RLC series circuit?
What is the formula for admittance, Y, in an RLC series circuit?
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