Electrical Engineering - RLC Circuits and Resonance
Exercise : RLC Circuits and Resonance - General Questions
- RLC Circuits and Resonance - General Questions
- RLC Circuits and Resonance - True or False
6.
The impedance at the resonant frequency of a series RLC circuit with L = 20 mH, C = 0.02 
F, and RW = 90 
is
F, and RW = 90 is0
90
20 k
40 k
7.
A 6.8 k resistor, a 7 mH coil, and a 0.02 F capacitor are in parallel across a 17 kHz ac source. The coil's internal resistance, RW, is 30 . The equivalent parallel resistance, Rp(eq), is
resistor, a 7 mH coil, and a 0.02 F capacitor are in parallel across a 17 kHz ac source. The coil's internal resistance, RW, is 30 . The equivalent parallel resistance, Rp(eq), is1,878
18,780
18,750
626
8.
Referring to Problem 20, what is the total parallel resistance (Rp(tot))?
4.99
499
4,992
6,800
9.
A 200 resistor, a coil with 30 of reactance, and a capacitor of unknown reactance are in series across an ac source. The circuit is at resonance. Circuit impedance
resistor, a coil with 30 of reactance, and a capacitor of unknown reactance are in series across an ac source. The circuit is at resonance. Circuit impedanceis 230
is 170
is 200
cannot be determined
10.
Referring to Problem 8, the total current is
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