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RLC Circuits and Resonance
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At any resonant frequency, what net voltage is measured across the two series reactive components
Reactive voltage
VL + VC voltage
applied voltage
zero voltage
Which statement best describes reactance in a series RLC circuit
Capacitive reactance is always dominant.
Resistance is always dominant.
Inductive reactance is always dominant.
The larger of the two reactances is dominant.
At resonance, the term bandwidth includes all frequencies that allow what percentage of maximum current to flow
62.3
95.3
50
70.7
What is the high cutoff frequency for an RLC circuit that resonates at 2000 Hz and has a bandwidth of 250 Hz
2250 Hz
8.0 Hz
1750 Hz
2125 Hz
When a parallel tank is used in series with an output load resistor the filter is a(n) ______ filter
Low-pass
high-pass
Bandpass
band-stop
The output voltage is _____ at the resonant frequency in the given circuit
66.5 mV
380 mV
0 mV
31.4 mV
The bandwidth is ______ in the given circuit
4.44 kHz
179.28 Hz
3.54 kHz
15.85 kHz
What is the resonance frequency
71 Hz
31.8 Hz
31.8 kHz
7.1 kHz
The phase angle is ______ in the given circuit
62.4°
74.1°
76.1°
27.6°
What is the total current
26.0 mA
15.6 mA
17.8 mA
21.9 mA
At any resonant frequency, what voltage is measured across the two series reactive components
inductive and capacitive
applied
Zero
reactive
What is the impedance of the circuit in the given circuit
297.6
370.1
125.7
423.3
If the bandwidth of a filter increases
the roll-off rate increases
Q decreases
the half-power frequency decreases
the center frequency decreases
When a parallel circuit resonates it is said to
oscillate
flywheel
Both of the above
None of the above
The ___ of a circuit describes the ability of that circuit to respond to certain frequencies while rejecting all others
Sensitivity
Bandwidth
selectivity
quality factor
The output voltage at the resonant frequency is ______ in the givencircuit.
If a 10 k load is connected
6.5 V
553 mV
5.65 V
6.01 V
What is the impedance of the circuit
20.3 k
12.2 k
14.5 k
17.8 k
In a parallel RLC circuit, which value may always be used as a vector reference
resistance
Current
Reactance
Voltage
What is the voltage across the capacitor in the given circuit
22.9 V
6.8 V
16.1 V
11.9 V
How much current will flow in a 100 Hz series RLC circuit if VS = 20 V, RT = 66 ohms, and XT = 47 ohms
107 mA
303 mA
247 mA
1.05 A
1
2
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