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

Answer: Option B

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

Answer: Option D

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

Answer: Option C

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

Answer: Option B

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

Answer: Option B

Explanation:

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