Increasing the L/C ratio of a parallel LC configuration impacts the circuit's Q factor by______________?
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Answer: B. Is increased
Explanation
The quality factor of a parallel LC circuit is directly proportional to the square root of L over C. Increasing the inductance to capacitance ratio increases the stored magnetic energy relative to electric energy. This higher energy storage efficiency results in an increased overall circuit Q factor. Quality factor determines the sharpness of resonance and selectivity of tuned electronic circuits. Adjusting component values alters the L over C ratio in practical radio frequency oscillators. Higher Q factors reduce circuit bandwidth and improve frequency discrimination in receivers.
RF circuit designers modify the L over C ratio to tune filter performance for specific applications. Increasing Q helps reject unwanted adjacent channel interference in wireless communication devices. Component sizing must balance Q factor improvements against physical inductor size limitations. Is decreased is incorrect because the Q factor varies directly with the square root of L over C. Remains the same is false since altering component ratios changes the energy storage characteristics. None of the above is incorrect because the Q factor is definitely increased by higher ratios.
- Subject
- Engineering
- Category
- Electrical Engineering
- Topic
- —
- Difficulty
- medium
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