Question 1

A highly selective filter has a veryW ide bandwidth.

Accepted Answer

A) True 
 B)False  False

Question 2

If a tank circuit is operating above resonance, it is ______in nature.

Accepted Answer

A)  inductive 
B)  positive 
C)  capacitive 
D)  resistive 
A)  inductive 
B)  positive 
C)  capacitive 
D)  resistive C

Question 3

In an ideal parallel resonant circuit, the total current into the L and C branches is ________.

Accepted Answer

A) high 
B) zero 
C) low 
D) maximum 
A) high 
B) zero 
C) low 
D) maximum B

Question 4

What is the current in a parallel RLC circuit if its impedance is  0.22  $M \Omega , Q$ is 100 and VS  =50  V?

Accepted Answer

A)   2.27 mA 
B)   0.0227 mA 
C)   22.7 mA 
D)   0.227 mA 
A)   2.27 mA 
B)   0.0227 mA 
C)   22.7 mA 
D)   0.227 mA

Question 5

In a parallel resonant circuit, the impedance is minimum and the line current is maximum.

Accepted Answer

A) True 
 B)False

Question 6

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

Accepted Answer

A)  add to each other. 
B)  cancel each other. 
C)  are minimum. 
D)  are moderate. 
A)  add to each other. 
B)  cancel each other. 
C)  are minimum. 
D)  are moderate.

Question 7

In a series RLC circuit just below the resonant frequency, the impedance is:

Accepted Answer

A)  more inductive. 
B)  at maximum. 
C)  more capacitive. 
D)  at minimum. 
A)  more inductive. 
B)  at maximum. 
C)  more capacitive. 
D)  at minimum.

Question 8

If a resonant circuit has a low Q, it ________.

Accepted Answer

A) has a smallVoltage across the capacitor 
B) has a Wide pass-band 
C) tunes sharply 
D) has a narrow pass-band 
A) has a smallVoltage across the capacitor 
B) has a Wide pass-band 
C) tunes sharply 
D) has a narrow pass-band

Question 9

$$\text { Figure } 13 < 2$$
-If the resistance decreases in Figure 13-2, the bandwidth ________.

Accepted Answer

A) decreases 
B) varies 
C) remains the same 
D) increases 
A) decreases 
B) varies 
C) remains the same 
D) increases

Question 10

$$\text { Figure } 13 < 2$$
-If the capacitor opens in Figure 13-2, the current ________.

Accepted Answer

A) remains the same 
B) increases because of the inductor 
C) continues to flow, but the circuitW
Ould not be resonant 
D) decreases to zero 
A) remains the same 
B) increases because of the inductor 
C) continues to flow, but the circuitW
Ould not be resonant 
D) decreases to zero

Question 11

At resonance, a parallel RLC circuit is inductive.

Accepted Answer

A) True 
 B)False

Question 12

The total impedance equals the resistance of a resonant series RLC circuit.

Accepted Answer

A) True 
 B)False

Question 13

In a series RLC circuit just above the resonant frequency, the impedance is:

Accepted Answer

A) more inductive. 
B) more capacitive. 
C) at maximum. 
D) at minimum. 
A) more inductive. 
B) more capacitive. 
C) at maximum. 
D) at minimum.

Question 14

$$\text { Figure } 13 < 2$$
-If the resistance increases in Figure 13-2, the bandwidth ________.

Accepted Answer

A) increases 
B) remains the same 
C) varies 
D) decreases 
A) increases 
B) remains the same 
C) varies 
D) decreases

Question 15

What is the source voltage in a series resonant circuit if $\mathrm { V } _ { C }$=150 V, $\mathrm { V } _ { \mathrm { L } }$=150 V  and  $\mathrm { V_R }$=50 V ?

Accepted Answer

A)   300 V 
B)   50 V 
C)   350 V 
D)   150 V 
A)   300 V 
B)   50 V 
C)   350 V 
D)   150 V

Question 16

If a tuned tank circuit has a very narrow bandwidth, its     is probably_________

Accepted Answer

A)  very low 
B)  below 10 
C)  about 10 
D)  very high 
A)  very low 
B)  below 10 
C)  about 10 
D)  very high

Question 17

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

Accepted Answer

A) decrease, decrease 
B) donʹt change, increase 
C) increase, increase 
D) donʹt change, decrease 
A) decrease, decrease 
B) donʹt change, increase 
C) increase, increase 
D) donʹt change, decrease

Question 18

What is the resonant frequency of a tank circuit with a  150 mH inductor and a  300 pF  capacitor?

Accepted Answer

A)   23.7 kHz 
B)   237 kHz 
C)   23.7 Hz 
D)   2.37 MHz 
A)   23.7 kHz 
B)   237 kHz 
C)   23.7 Hz 
D)   2.37 MHz

Question 19

A resonant RLC circuit is said to be very selective if its  Q  is very low.

Accepted Answer

A) True 
 B)False

Question 20

In a series resonant circuit, the impedance is minimum and the current is maximum.

Accepted Answer

A) True 
 B)False

A highly selective filter has a veryW ide bandwidth.

If a tank circuit is operating above resonance, it is ______in nature.

In an ideal parallel resonant circuit, the total current into the L and C branches is ________.

What is the current in a parallel RLC circuit if its impedance is 0.22 $M \Omega , Q$ is 100 and V_S =50 V?

In a parallel resonant circuit, the impedance is minimum and the line current is maximum.

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

In a series RLC circuit just below the resonant frequency, the impedance is:

If a resonant circuit has a low Q, it ________.

$\text { Figure } 13 < 2 -If the resistance decreases in Figure 13-2, the bandwidth .$ $\text { Figure } 13 < 2$ -If the resistance decreases in Figure 13-2, the bandwidth .

$\text { Figure } 13 < 2 -If the capacitor opens in Figure 13-2, the current .$ $\text { Figure } 13 < 2$ -If the capacitor opens in Figure 13-2, the current .

At resonance, a parallel RLC circuit is inductive.

The total impedance equals the resistance of a resonant series RLC circuit.

In a series RLC circuit just above the resonant frequency, the impedance is:

$\text { Figure } 13 < 2 -If the resistance increases in Figure 13-2, the bandwidth .$ $\text { Figure } 13 < 2$ -If the resistance increases in Figure 13-2, the bandwidth .

What is the source voltage in a series resonant circuit if $\mathrm { V } _ { C }$ =150 V, $\mathrm { V } _ { \mathrm { L } }$ =150 V and $\mathrm { V_R }$ =50 V ?

If a tuned tank circuit has a very narrow bandwidth, its is probably_________

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

What is the resonant frequency of a tank circuit with a 150 mH inductor and a 300 pF capacitor?

A resonant RLC circuit is said to be very selective if its Q is very low.

In a series resonant circuit, the impedance is minimum and the current is maximum.

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

A highly selective filter has a veryW ide bandwidth.

If a tank circuit is operating above resonance, it is ______in nature.

In an ideal parallel resonant circuit, the total current into the L and C branches is ________.

What is the current in a parallel RLC circuit if its impedance is 0.22 MΩ,QM \Omega , QMΩ,Q is 100 and VS =50 V?

In a parallel resonant circuit, the impedance is minimum and the line current is maximum.

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

In a series RLC circuit just below the resonant frequency, the impedance is:

If a resonant circuit has a low Q, it ________.

Figure 13<2\text { Figure } 13 < 2 Figure 13<2 -If the resistance decreases in Figure 13-2, the bandwidth ________.

Figure 13<2\text { Figure } 13 < 2 Figure 13<2 -If the capacitor opens in Figure 13-2, the current ________.

At resonance, a parallel RLC circuit is inductive.

The total impedance equals the resistance of a resonant series RLC circuit.

In a series RLC circuit just above the resonant frequency, the impedance is:

Figure 13<2\text { Figure } 13 < 2 Figure 13<2 -If the resistance increases in Figure 13-2, the bandwidth ________.

What is the source voltage in a series resonant circuit if VC\mathrm { V } _ { C }VC​ =150 V, VL\mathrm { V } _ { \mathrm { L } }VL​ =150 V and VR\mathrm { V_R }VR​ =50 V ?

If a tuned tank circuit has a very narrow bandwidth, its is probably_________

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

What is the resonant frequency of a tank circuit with a 150 mH inductor and a 300 pF capacitor?

A resonant RLC circuit is said to be very selective if its Q is very low.

In a series resonant circuit, the impedance is minimum and the current is maximum.

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 current in a parallel RLC circuit if its impedance is 0.22 $M \Omega , Q$ is 100 and V_S =50 V?

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

$\text { Figure } 13 < 2 -If the resistance decreases in Figure 13-2, the bandwidth .$ $\text { Figure } 13 < 2$ -If the resistance decreases in Figure 13-2, the bandwidth .

$\text { Figure } 13 < 2 -If the capacitor opens in Figure 13-2, the current .$ $\text { Figure } 13 < 2$ -If the capacitor opens in Figure 13-2, the current .

$\text { Figure } 13 < 2 -If the resistance increases in Figure 13-2, the bandwidth .$ $\text { Figure } 13 < 2$ -If the resistance increases in Figure 13-2, the bandwidth .

What is the source voltage in a series resonant circuit if $\mathrm { V } _ { C }$ =150 V, $\mathrm { V } _ { \mathrm { L } }$ =150 V and $\mathrm { V_R }$ =50 V ?

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