# Electronics - RLC Circuits and Resonance

### Exercise :: RLC Circuits and Resonance - General Questions

21.

What is the true power consumed in a 30 V series RLC circuit if Z = 20 ohms and R = 10 ohms?

 A. 15.0 watts B. 22.5 watts C. 30.0 watts D. 45.0 watts

Explanation:

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22.

What is the current phase angle for a parallel RLC circuit when IL = 15.3 A, IC = 0.43 A, and IR = 3.5 A?

 A. 76.7 degrees B. –4.25 degrees C. 88.8 degrees D. –76.7 degrees

Explanation:

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23.

At any resonant frequency, what voltage is measured across the two series reactive components?

 A. applied B. reactive C. zero D. inductive and capacitive

Explanation:

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24.

What is the resonance frequency?

 A. 31.8 Hz B. 71 Hz C. 7.1 kHz D. 31.8 kHz

Explanation:

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25.

What is the range between f1 and f2 of an RLC circuit that resonates at 150 kHz and has a Q of 30?

 A. 100.0 kHz to 155.0 kHz B. 147.5 kHz to 152.5 kHz C. 4500 kHz to 295.5 kHz D. 149,970 Hz to 150,030 Hz