Question 1

What is the power at  f1 and  f2  in a resonant circuit that delivers  750 W  ?

Accepted Answer

A)   375 W  at both frequencies 
B)   750 W  at both frequencies 
C)   375 W  at  f1  and  750 W  at  f2 
D)   17 W  at both frequencies 
A)   375 W  at both frequencies 
B)   750 W  at both frequencies 
C)   375 W  at  f1  and  750 W  at  f2 
D)   17 W  at both frequencies

Question 2

At resonance, the impedance of a series RLC circuit equals its resistance.

Accepted Answer

A) True 
 B)False

Question 3

\[\text { Figure } 13 R __________

Accepted Answer

A)  becomes increasingly unstable 
B)  increases 
C)  remains the same 
D)  decreases 
A)  becomes increasingly unstable 
B)  increases 
C)  remains the same 
D)  decreases

Question 4

$$\text { Figure } 13 < 2$$
-At resonance, the current in Figure 13-2 is ________.

Accepted Answer

A) 1.66 mA 
B) 10 A 
C) 1.66 4 
D) 10 mA 
A) 1.66 mA 
B) 10 A 
C) 1.66 4 
D) 10 mA

Question 5

What is the resonant frequency of a tank circuit with a  50 mH  inductor and  C=256 pF  capacitor?

Accepted Answer

A)   44.5 kHz 
B)   44.5 Hz 
C)   445 kHz 
D)   4.45 kHz 
A)   44.5 kHz 
B)   44.5 Hz 
C)   445 kHz 
D)   4.45 kHz

Question 6

In a resonant circuit, as Q increases the bandwidth decreases.

Accepted Answer

A) True 
 B)False

Question 7

In a parallel resonant RLC circuit, the impedance is ________ and the total current is ________.

Accepted Answer

A) maximum. maximum 
B) minimum, minimum 
C) minimum, maximum 
D) maximum, minimum 
A) maximum. maximum 
B) minimum, minimum 
C) minimum, maximum 
D) maximum, minimum

Question 8

The selectivity of a given band-pass filter has degraded significantly, yet the fr isW ithin tolerance. Which of the following could have caused this?

Accepted Answer

A) The inductance has increased. 
B) The load has opened. 
C) The capacitance has increased. 
D) none of the above 
A) The inductance has increased. 
B) The load has opened. 
C) The capacitance has increased. 
D) none of the above

Question 9

What is the bandwidth of a resonant circuit if its resonant frequency is  14.2 MHz , the inductive reactance is  3.5  $\mathrm { k } \Omega$
 and the coil's resistance is  8 ohm  ?

Accepted Answer

A)   2285 Hz 
B)   32.5 kHz 
C)   14.2 MHz 
D)   28.4 kHz 
A)   2285 Hz 
B)   32.5 kHz 
C)   14.2 MHz 
D)   28.4 kHz

Question 10

The capacitor's resistive effects are significant when considering the  Q  of an RLC circuit.

Accepted Answer

A) True 
 B)False

Question 11

$$\text { Figure } 13 < 1$$
-To operate the circuit in Figure 13-1 below the resonant frequency, ________ the resistance and ________ the frequency.

Accepted Answer

A) do not change, decrease 
B) do not change, increase 
C) decrease, decrease 
D) increase, increase 
A) do not change, decrease 
B) do not change, increase 
C) decrease, decrease 
D) increase, increase

Question 12

In a parallel RLC circuit,at resonance the capacitive reactance XC  and the inductive reactance  XL  :

Accepted Answer

A)  are moderate. 
B)  equal and oppose current flow. 
C)  are minimum. 
D)  add to each to cancel current flow. 
A)  are moderate. 
B)  equal and oppose current flow. 
C)  are minimum. 
D)  add to each to cancel current flow.

Question 13

A resonant circuit with a high Q  ????????????????????.

Accepted Answer

A) has aVery Wide pass-band 
B) has no pass-band 
C) tunes sharply 
D) has a small Voltage across the capacitor 
A) has aVery Wide pass-band 
B) has no pass-band 
C) tunes sharply 
D) has a small Voltage across the capacitor

Question 14

$$\text { Figure } 13 < 1$$
-If the frequency decreases in Figure 13-1, the impedance ________ and the phase angle ________.

Accepted Answer

A) increases, increases 
B) decreases, decreases 
C) decreases, increases 
D) increases, decreases 
A) increases, increases 
B) decreases, decreases 
C) decreases, increases 
D) increases, decreases

Question 15

$$\text { Figure } 13 < 2$$
-If the current is  0 A  in Figure 13-2, maybe ____________

Accepted Answer

A)  the capacitor is shorted 
B)  the resistor is open 
C)  the resistor has changed values to  100$\Omega$ 
D)  the inductor is shorted 
A)  the capacitor is shorted 
B)  the resistor is open 
C)  the resistor has changed values to  100$\Omega$ 
D)  the inductor is shorted

Question 16

At resonance,  XC equals  XL .

Accepted Answer

A) True 
 B)False

Question 17

What is the power at f1  and  f2 in a resonant circuit that delivers  120 W  ?

Accepted Answer

A)   84.8 W  at f1  and  60 W  at  f2 
B)   84.8 W 
C)   60 W 
D)   17 W  at both frequencies 
A)   84.8 W  at f1  and  60 W  at  f2 
B)   84.8 W 
C)   60 W 
D)   17 W  at both frequencies

Question 18

What is the VOUT/VIN ratio (expressed in dB) of an RLC series resonant circuit with the output across the inductor if the resonant frequency is 14 MHz, the source voltage is 12 V and the inductor
drops 300 V?

Accepted Answer

A) 13.98 dB 
B) 25 dB 
C) 42.91 dB 
D) 27.96 dB 
A) 13.98 dB 
B) 25 dB 
C) 42.91 dB 
D) 27.96 dB

Question 19

What is the ratio of $V _ { \mathrm { OUT } } / V _ { \mathrm { IN } }$ (expressed in  dB ) in an RLC series resonant circuit if the output voltage is taken across the inductor, the resonant frequency is  14 MHz , the source voltage is  18 V  and the inductor drops  300 V ?

Accepted Answer

A)   28 dB 
B)   24.4 dB 
C)   14.0 dB 
D)   42.9 dB 
A)   28 dB 
B)   24.4 dB 
C)   14.0 dB 
D)   42.9 dB

Question 20

Between the lower and upper critical frequencies of a band-pass filter:

Accepted Answer

A) the frequencies pass a maximum level. 
B) the frequencies pass at 70% to their maximum levels. 
C) the frequencies pass a minimum level. 
D) the frequencies pass at 30% to their maximum levels. 
A) the frequencies pass a maximum level. 
B) the frequencies pass at 70% to their maximum levels. 
C) the frequencies pass a minimum level. 
D) the frequencies pass at 30% to their maximum levels.

What is the power at f₁ and f₂ in a resonant circuit that delivers 750 W ?

At resonance, the impedance of a series RLC circuit equals its resistance.

$\text { Figure } 13 < 1 -As the frequency approaches the resonant frequency in Figure 13-1 , the V<sub>R</sub> __________$ $\text { Figure } 13 < 1$ -As the frequency approaches the resonant frequency in Figure 13-1 , the V_R __________

$\text { Figure } 13 < 2 -At resonance, the current in Figure 13-2 is .$ $\text { Figure } 13 < 2$ -At resonance, the current in Figure 13-2 is .

What is the resonant frequency of a tank circuit with a 50 mH inductor and C=256 pF capacitor?

In a resonant circuit, as Q increases the bandwidth decreases.

In a parallel resonant RLC circuit, the impedance is and the total current is .

The selectivity of a given band-pass filter has degraded significantly, yet the fr isW ithin tolerance. Which of the following could have caused this?

What is the bandwidth of a resonant circuit if its resonant frequency is 14.2 MHz , the inductive reactance is 3.5 $\mathrm { k } \Omega$ and the coil's resistance is 8 ohm ?

The capacitor's resistive effects are significant when considering the Q of an RLC circuit.

$\text { Figure } 13 < 1 -To operate the circuit in Figure 13-1 below the resonant frequency, the resistance and the frequency.$ $\text { Figure } 13 < 1$ -To operate the circuit in Figure 13-1 below the resonant frequency, the resistance and the frequency.

In a parallel RLC circuit,at resonance the capacitive reactance X_C and the inductive reactance X_L :

A resonant circuit with a high Q ????????????????????.

$\text { Figure } 13 < 1 -If the frequency decreases in Figure 13-1, the impedance and the phase angle .$ $\text { Figure } 13 < 1$ -If the frequency decreases in Figure 13-1, the impedance and the phase angle .

$\text { Figure } 13 < 2 -If the current is 0 A in Figure 13-2, maybe $ $\text { Figure } 13 < 2$ -If the current is 0 A in Figure 13-2, maybe

At resonance, X_C equals X_L .

What is the power at f₁ and f₂ in a resonant circuit that delivers 120 W ?

What is the VOUT/V_INratio (expressed in dB) of an RLC series resonant circuit with the output across the inductor if the resonant frequency is 14 MHz, the source voltage is 12 V and the inductor drops 300 V?

What is the ratio of $V _ { \mathrm { OUT } } / V _ { \mathrm { IN } }$ (expressed in dB ) in an RLC series resonant circuit if the output voltage is taken across the inductor, the resonant frequency is 14 MHz , the source voltage is 18 V and the inductor drops 300 V ?

Between the lower and upper critical frequencies of a band-pass filter:

Quantities and Units

Voltage, Current, and Resistance

Ohms Law, Energy, and Power

Series Circuits

Parallel Circuits

Series-Parallel Circuits

Magnetism and Electromagnetism

Introduction to Alternating Current and Voltage

Capacitors

Rc Circuits

Inductors

Rl Circuits

Time Response of Reactive Circuits

Transformers

Regulators, Filters, and Op-Amps

Understanding Transducers, Sensors, and Conversion in Industrial Processes

Filters

Exam 13: Rlc Circuits and Resonance

What is the power at f1 and f2 in a resonant circuit that delivers 750 W ?

At resonance, the impedance of a series RLC circuit equals its resistance.

Figure 13<1\text { Figure } 13 < 1 Figure 13<1 -As the frequency approaches the resonant frequency in Figure 13-1 , the VR __________

Figure 13<2\text { Figure } 13 < 2 Figure 13<2 -At resonance, the current in Figure 13-2 is ________.

What is the resonant frequency of a tank circuit with a 50 mH inductor and C=256 pF capacitor?

In a resonant circuit, as Q increases the bandwidth decreases.

In a parallel resonant RLC circuit, the impedance is ________ and the total current is ________.

The selectivity of a given band-pass filter has degraded significantly, yet the fr isW ithin tolerance. Which of the following could have caused this?

What is the bandwidth of a resonant circuit if its resonant frequency is 14.2 MHz , the inductive reactance is 3.5 kΩ\mathrm { k } \OmegakΩ and the coil's resistance is 8 ohm ?

The capacitor's resistive effects are significant when considering the Q of an RLC circuit.

Figure 13<1\text { Figure } 13 < 1 Figure 13<1 -To operate the circuit in Figure 13-1 below the resonant frequency, ________ the resistance and ________ the frequency.

In a parallel RLC circuit,at resonance the capacitive reactance XC and the inductive reactance XL :

A resonant circuit with a high Q ????????????????????.

Figure 13<1\text { Figure } 13 < 1 Figure 13<1 -If the frequency decreases in Figure 13-1, the impedance ________ and the phase angle ________.

Figure 13<2\text { Figure } 13 < 2 Figure 13<2 -If the current is 0 A in Figure 13-2, maybe ____________

At resonance, XC equals XL .

What is the power at f1 and f2 in a resonant circuit that delivers 120 W ?

What is the VOUT/VIN ratio (expressed in dB) of an RLC series resonant circuit with the output across the inductor if the resonant frequency is 14 MHz, the source voltage is 12 V and the inductor drops 300 V?

What is the ratio of VOUT/VINV _ { \mathrm { OUT } } / V _ { \mathrm { IN } }VOUT​/VIN​ (expressed in dB ) in an RLC series resonant circuit if the output voltage is taken across the inductor, the resonant frequency is 14 MHz , the source voltage is 18 V and the inductor drops 300 V ?

Between the lower and upper critical frequencies of a band-pass filter:

Quantities and Units

Voltage, Current, and Resistance

Ohms Law, Energy, and Power

Series Circuits

Parallel Circuits

Series-Parallel Circuits

Magnetism and Electromagnetism

Introduction to Alternating Current and Voltage

Capacitors

Rc Circuits

Inductors

Rl Circuits

Time Response of Reactive Circuits

Transformers

Regulators, Filters, and Op-Amps

Understanding Transducers, Sensors, and Conversion in Industrial Processes

Filters

What is the power at f₁ and f₂ in a resonant circuit that delivers 750 W ?

$\text { Figure } 13 < 1 -As the frequency approaches the resonant frequency in Figure 13-1 , the V<sub>R</sub> __________$ $\text { Figure } 13 < 1$ -As the frequency approaches the resonant frequency in Figure 13-1 , the V_R __________

$\text { Figure } 13 < 2 -At resonance, the current in Figure 13-2 is .$ $\text { Figure } 13 < 2$ -At resonance, the current in Figure 13-2 is .

In a parallel resonant RLC circuit, the impedance is and the total current is .

What is the bandwidth of a resonant circuit if its resonant frequency is 14.2 MHz , the inductive reactance is 3.5 $\mathrm { k } \Omega$ and the coil's resistance is 8 ohm ?

$\text { Figure } 13 < 1 -To operate the circuit in Figure 13-1 below the resonant frequency, the resistance and the frequency.$ $\text { Figure } 13 < 1$ -To operate the circuit in Figure 13-1 below the resonant frequency, the resistance and the frequency.

In a parallel RLC circuit,at resonance the capacitive reactance X_C and the inductive reactance X_L :

$\text { Figure } 13 < 1 -If the frequency decreases in Figure 13-1, the impedance and the phase angle .$ $\text { Figure } 13 < 1$ -If the frequency decreases in Figure 13-1, the impedance and the phase angle .

$\text { Figure } 13 < 2 -If the current is 0 A in Figure 13-2, maybe $ $\text { Figure } 13 < 2$ -If the current is 0 A in Figure 13-2, maybe

At resonance, X_C equals X_L .

What is the power at f₁ and f₂ in a resonant circuit that delivers 120 W ?

What is the VOUT/V_INratio (expressed in dB) of an RLC series resonant circuit with the output across the inductor if the resonant frequency is 14 MHz, the source voltage is 12 V and the inductor drops 300 V?

What is the ratio of $V _ { \mathrm { OUT } } / V _ { \mathrm { IN } }$ (expressed in dB ) in an RLC series resonant circuit if the output voltage is taken across the inductor, the resonant frequency is 14 MHz , the source voltage is 18 V and the inductor drops 300 V ?