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