Question 1

If an LC tank circuit is operating below resonance, the circuit is in nature.

Accepted Answer

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

Question 2

If a tuned tank circuit has a very wide bandwidth, its Q might be .

Accepted Answer

A) about 10 
B) very high 
C) very low 
D) about 100 
A) about 10 
B) very high 
C) very low 
D) about 100

Question 3

-To operate the circuit in Figure 13 -1 at resonance, frequency. the resistance and
_ the

Accepted Answer

A) increase, increase 
B) don't change, decrease 
C) don't change, increase 
D) decrease, decrease 
A) increase, increase 
B) don't change, decrease 
C) don't change, increase 
D) decrease, decrease

Question 4

Replacing the inductor in a series resonant band -pass filter with one having a lower Q value causes the bandwidth to .

Accepted Answer

A) remain the same 
B) increase 
C) be more selective 
D) decrease 
A) remain the same 
B) increase 
C) be more selective 
D) decrease

Question 5

What is the ratio of 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?

Accepted Answer

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

Question 6

At resonance, a parallel RLC circuit is inductive.

Accepted Answer

A) True 
 B)False

Question 7

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

Accepted Answer

A) True 
 B)False

Question 8

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

Accepted Answer

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

Question 9

-Find the voltage across the capacitor in Figure 13 -1.

Accepted Answer

A) 5.37 V 
B) 0.633 V 
C) -4.9 V 
D) 10.7 V 
A) 5.37 V 
B) 0.633 V 
C) -4.9 V 
D) 10.7 V

Question 10

-To operate the circuit in Figure 13 -1 below the resonant frequency, the frequency.
_ the resistance and

Accepted Answer

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

Question 11

A series RLC circuit can be configured for band -pass or band -stop filtering purposes.

Accepted Answer

A) True 
 B)False

Question 12

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

Accepted Answer

A) True 
 B)False

Question 13

If a tuned tank circuit has a very narrow bandwidth, its Q is probably .

Accepted Answer

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

Question 14

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

Accepted Answer

A) True 
 B)False

Question 15

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

Accepted Answer

A) True 
 B)False

Question 16

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

Question 17

-If the resistance increases in Figure 13 -1, the impedance .

Accepted Answer

A) remains the same 
B) becomes zero 
C) increases 
D) decreases 
A) remains the same 
B) becomes zero 
C) increases 
D) decreases

Question 18

What is the lower cut off frequency in an RLC resonant circuit if the inductive reactance is 1.2 kΩ, the resonant frequency is 22 kHz and the resistance is 60 Ω?

Accepted Answer

A) 20.9 kHz 
B) 21.7 kHz 
C) 21.8 kHz 
D) 21.5 kHz 
A) 20.9 kHz 
B) 21.7 kHz 
C) 21.8 kHz 
D) 21.5 kHz

Question 19

-If the current is 0 A in Figure 13 -2, maybe .

Accepted Answer

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

Question 20

-If frequency increases in Figure 13 -1, the impedance _ and the current .

Accepted Answer

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

If an LC tank circuit is operating below resonance, the circuit is in nature.

If a tuned tank circuit has a very wide bandwidth, its Q might be .

-To operate the circuit in Figure 13 -1 at resonance, frequency. the resistance and _ the

Replacing the inductor in a series resonant band -pass filter with one having a lower Q value causes the bandwidth to .

What is the ratio of 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?

At resonance, a parallel RLC circuit is inductive.

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

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

-Find the voltage across the capacitor in Figure 13 -1.

-To operate the circuit in Figure 13 -1 below the resonant frequency, the frequency. _ the resistance and

A series RLC circuit can be configured for band -pass or band -stop filtering purposes.

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

If a tuned tank circuit has a very narrow bandwidth, its Q is probably .

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.

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?

-If the resistance increases in Figure 13 -1, the impedance .

What is the lower cut off frequency in an RLC resonant circuit if the inductive reactance is 1.2 kΩ, the resonant frequency is 22 kHz and the resistance is 60 Ω?

-If the current is 0 A in Figure 13 -2, maybe .

-If frequency increases in Figure 13 -1, the impedance _ and the current .

Systems, 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

Rccircuits

Inductors

Rlcircuits

Transformers

Time Response of Reactive Circuits

Filters

Exam 13: Rlccircuits and Resonance

If an LC tank circuit is operating below resonance, the circuit is in nature.

If a tuned tank circuit has a very wide bandwidth, its Q might be .

-To operate the circuit in Figure 13 -1 at resonance, frequency. the resistance and _ the

Replacing the inductor in a series resonant band -pass filter with one having a lower Q value causes the bandwidth to .

What is the ratio of 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?

At resonance, a parallel RLC circuit is inductive.

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

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

-Find the voltage across the capacitor in Figure 13 -1.

-To operate the circuit in Figure 13 -1 below the resonant frequency, the frequency. _ the resistance and

A series RLC circuit can be configured for band -pass or band -stop filtering purposes.

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

If a tuned tank circuit has a very narrow bandwidth, its Q is probably .

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.

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?

-If the resistance increases in Figure 13 -1, the impedance .

What is the lower cut off frequency in an RLC resonant circuit if the inductive reactance is 1.2 kΩ, the resonant frequency is 22 kHz and the resistance is 60 Ω?

-If the current is 0 A in Figure 13 -2, maybe .

-If frequency increases in Figure 13 -1, the impedance _ and the current .

Systems, 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

Rccircuits

Inductors

Rlcircuits

Transformers

Time Response of Reactive Circuits

Filters