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