Resonance is a condition in a series RLC circuit in which the capacitive and inductive reactances are equal in magnitude.
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Electrical Engineering · all questionsRLC Circuits And Resonance
RLC Circuits And Resonance
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If the value of C in a series RLC circuit is decreased, the resonant frequency increases
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A lower Q produces a narrower bandwidth.
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A certain series resonant circuit has a bandwidth of 2 kHz. If the existing coil is replaced with one having a higher value of Q, the bandwidth will
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A 6.8 kΩ resistor, a 7 mH coil, and a 0.02 µF capacitor are in parallel across a 17 kHz ac source. The coil's internal resistance, RW, is 30 Ω. The equivalent parallel resistance, Rp(eq), is
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The impedance at the resonant frequency of a series RLC circuit with L = 20 mH, C = 0.02 µF, and RW = 90 Ω is
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In a parallel RLC circuit, the smaller reactance determines the net reactance of the circuit.
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In a series RLC circuit, the larger reactance determines the net reactance of the circuit.
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To tune a parallel resonant circuit to a higher frequency, the capacitance should be
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The reactive voltages, VL and VC, cancel at resonance.
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A 15 Ω resistor, an inductor with 8 Ω inductive reactance, and a capacitor with 12 Ω capacitive reactance are in parallel across an ac voltage source. The circuit impedance is
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A 9 mH coil is in parallel with a 0.015 µF capacitor across an 18 kHz ac source. The coil's internal resistance RW, is 60 Ω. The circuit impedance is
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A 200 Ω resistor, a coil with 30 Ω of reactance, and a capacitor of unknown reactance are in series across an ac source. The circuit is at resonance. Circuit impedance is
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If the resistance in parallel with a parallel resonant circuit is reduced, the bandwidth
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If the value of C in a series RLC circuit is decreased, the resonant frequency
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A certain series RLC circuit with a 200 Hz, 15 V ac source has the following values: R = 12 Ω, C = 80 µF, and L = 10 mH. The total impedance, expressed in polar form, is
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In a series RLC circuit that is operating above the resonant frequency, the current
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A 12 Ω resistor, a 40 µF capacitor, and an 8 mH coil are in series across an ac source. The resonant frequency is
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A resistor of 3 kΩ, a 0.05 µF capacitor, and a 120 mH coil are in series across a 5 kHz, 20 V ac source. What is the impedance, expressed in polar form?
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In a certain series resonant circuit, VC = 125 V, VL = 125 V, and VR = 40 V. The value of the source voltage is
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