Engineering Board Exam Reviewer · RLC Circuits and Resonance · medium
What capacitance must be placed in series with a 25 mH inductor so the circuit resonates at 2 kHz?
- 10, F
- 1.01, F
- 0.253, F
- 0.0633, F
Answer
C. 0.253, F
Solution
f0= 12πsqrt(LC) C=1/(2π f0)2L=1/(2π·2000)2(0.025)=0.253, F.
More RLC Circuits and Resonance questions
- In a series RLC circuit with a high Q, at resonance the voltage across the capacitor is
- A series RLC circuit is operated at a frequency above its resonant frequency. The circuit is
- A 10 kW single-phase load operates at 0.8 power factor lagging. How many kvar of capacitance must be connected in parallel to raise the…
- A series RLC circuit has R=30, , XL=60, , and XC=100, . What are the magnitude and nature of its impedance?
- A series RLC circuit has R=5, , L=20 mH, and C=0.2, F. Find its quality factor at resonance.
- The curve shows the normalized current of a series RLC circuit versus frequency. The dashed lines mark the half-power (0.707) points, at…
- A parallel RLC circuit is shown with R=100, , L=200 mH, and C=5, F, driven by a variable-frequency 120 V rms source tuned to the resonant…
- In the parallel RLC circuit shown, a 60 V (rms) source with =2000 rad/s is connected across R=10, , L=7.5 mH, and C=100, F in parallel…
- A series RLC circuit is shown, with R=8, , L=16 mH, and C=2.5, F connected to a variable-frequency source of 24 V rms. Find the quality…
- A series RLC circuit is shown, with R=50, , L=10 mH, and C=1, F connected to a variable-frequency source of 20 V rms. Find the resonant…