Question 1

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

Accepted Answer

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

Question 2

Current leads in a series RLC circuit with more capacitive reactance than inductive reactance.

Accepted Answer

A) True 
 B)False

Question 3

If the resonant frequency is 1 MHz and Q = 50, f1 = and f2 = .

Accepted Answer

A) 0.99 MHz, 1.02 MHz 
B) 0.98 MHz, 1.02 MHz 
C) 0.99 MHz, 1.01 MHz 
D) 0.98 MHz, 1.01 MHz 
A) 0.99 MHz, 1.02 MHz 
B) 0.98 MHz, 1.02 MHz 
C) 0.99 MHz, 1.01 MHz 
D) 0.98 MHz, 1.01 MHz

Question 4

-If the frequency decreases in Figure 13 -1, the impedance initally .
And the current initially

Accepted Answer

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

Question 5

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

Accepted Answer

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

Question 6

A resonant circuit designed to reduce the interference from a specific source is called a

Accepted Answer

A) shunt conductor 
B) break filter 
C) wave trap 
D) dropout filter 
A) shunt conductor 
B) break filter 
C) wave trap 
D) dropout filter

Question 7

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

Accepted Answer

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

Question 8

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

Accepted Answer

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

Question 9

-At resonance, the current in Figure 13 -2 is .

Accepted Answer

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

Question 10

-If the resistor shorts in Figure 13 -2, the current .

Accepted Answer

A) continues, but the circuit would not be resonant 
B) decreases 
C) does not change 
D) increases 
A) continues, but the circuit would not be resonant 
B) decreases 
C) does not change 
D) increases

Question 11

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

Accepted Answer

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

Question 12

The total reactance of a series RLC circuit at resonance is .

Accepted Answer

A) infinity 
B) equal to the resistance 
C) capacitive 
D) zero 
A) infinity 
B) equal to the resistance 
C) capacitive 
D) zero

Question 13

At resonance, XC equals XL.

Accepted Answer

A) True 
 B)False

Question 14

-If the capacitor opens in Figure 13 -2, the current .

Accepted Answer

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

Question 15

The true power of an RLC circuit depends on the value of resistance.

Accepted Answer

A) True 
 B)False

Question 16

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

Accepted Answer

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

Question 17

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

Accepted Answer

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

Question 18

A highly selective filter has a very wide bandwidth.

Accepted Answer

A) True 
 B)False

Question 19

At resonance, a series RLC circuit has maximum current.

Accepted Answer

A) True 
 B)False

Question 20

Which statement best describes the phase angle of a parallel RLC circuit at resonance?

Accepted Answer

A) With a net reactance at maximum the phase angle is zero. 
B) With a net reactance at minimum the phase angle is zero. 
C) Total current flow is minimum. 
D) either A or C 
A) With a net reactance at maximum the phase angle is zero. 
B) With a net reactance at minimum the phase angle is zero. 
C) Total current flow is minimum. 
D) either A or C

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

Current leads in a series RLC circuit with more capacitive reactance than inductive reactance.

If the resonant frequency is 1 MHz and Q = 50, f1 = and f2 = .

-If the frequency decreases in Figure 13 -1, the impedance initally . And the current initially

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

A resonant circuit designed to reduce the interference from a specific source is called a

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

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

-At resonance, the current in Figure 13 -2 is .

-If the resistor shorts in Figure 13 -2, the current .

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

The total reactance of a series RLC circuit at resonance is .

At resonance, XC equals XL.

-If the capacitor opens in Figure 13 -2, the current .

The true power of an RLC circuit depends on the value of resistance.

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

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

A highly selective filter has a very wide bandwidth.

At resonance, a series RLC circuit has maximum current.

Which statement best describes the phase angle of a parallel RLC circuit at resonance?

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

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

Current leads in a series RLC circuit with more capacitive reactance than inductive reactance.

If the resonant frequency is 1 MHz and Q = 50, f1 = and f2 = .

-If the frequency decreases in Figure 13 -1, the impedance initally . And the current initially

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

A resonant circuit designed to reduce the interference from a specific source is called a

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

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

-At resonance, the current in Figure 13 -2 is .

-If the resistor shorts in Figure 13 -2, the current .

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

The total reactance of a series RLC circuit at resonance is .

At resonance, XC equals XL.

-If the capacitor opens in Figure 13 -2, the current .

The true power of an RLC circuit depends on the value of resistance.

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

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

A highly selective filter has a very wide bandwidth.

At resonance, a series RLC circuit has maximum current.

Which statement best describes the phase angle of a parallel RLC circuit at resonance?

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