Question 1

-What change would increase the power factor in Figure 10 -2?

Accepted Answer

A) Increasing the value of the source voltage 
B) Increasing the value of the capacitor 
C) Decreasing the value of the capacitor 
D) Increasing the value of the resistor 
A) Increasing the value of the source voltage 
B) Increasing the value of the capacitor 
C) Decreasing the value of the capacitor 
D) Increasing the value of the resistor

Question 2

-If the operating frequency decreases in Figure 10 -1, how does the capacitance value change?

Accepted Answer

A) It remains the same. 
B) It decreases. 
C) It increases. 
D) It decreases to zero. 
A) It remains the same. 
B) It decreases. 
C) It increases. 
D) It decreases to zero.

Question 3

When the frequency applied to an RC circuit varies, the value of XC varies.

Accepted Answer

A) True 
 B)False

Question 4

A leaky capacitor can be equated as a capacitor with a resistor being placed in series with it.

Accepted Answer

A) True 
 B)False

Question 5

-If the operating frequency decreases in Figure 10 -1, how does the current change?

Accepted Answer

A) It decreases. 
B) It increases. 
C) It remains the same. 
D) It decreases to zero. 
A) It decreases. 
B) It increases. 
C) It remains the same. 
D) It decreases to zero.

Question 6

-If the frequency increases in Figure 10 -1, the phase angle and the impedance _.

Accepted Answer

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

Question 7

The total current in an RC circuit always leads the source voltage.

Accepted Answer

A) True 
 B)False

Question 8

-What change would decrease the power factor in Figure 10 -2?

Accepted Answer

A) increasing the value of the resistor 
B) increasing the value of Vs 
C) decreasing the value of the capacitor 
D) increasing the value of the capacitor 
A) increasing the value of the resistor 
B) increasing the value of Vs 
C) decreasing the value of the capacitor 
D) increasing the value of the capacitor

Question 9

In a X10 oscilloscope probe input resistance is factor of 10. _ and input capacitance is
_ by a

Accepted Answer

A) increased, decreased 
B) decreased, increased 
C) decreased, decreased 
D) increased, increased 
A) increased, decreased 
B) decreased, increased 
C) decreased, decreased 
D) increased, increased

Question 10

-If the frequency decreases in Figure 10 -1, the phase angle and the impedance _.

Accepted Answer

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

Question 11

-If the operating frequency decreases in Figure 10 -1, how does the resistance value change?

Accepted Answer

A) It decreases. 
B) It increases. 
C) It opens. 
D) It remains the same. 
A) It decreases. 
B) It increases. 
C) It opens. 
D) It remains the same.

Question 12

-If the frequency is 400 Hz in Figure 10 -1, what is the value of capacitance?

Accepted Answer

A) 10 µF 
B) 6.6 µF 
C) 8.8 µF 
D) 3.3 µF 
A) 10 µF 
B) 6.6 µF 
C) 8.8 µF 
D) 3.3 µF

Question 13

-If the resistor changes to 2.2 kΩ in Figure 10 -3, the new cutoff frequency equals .

Accepted Answer

A) 1.18 kHz 
B) 995 Hz 
C) 1.81 kHz 
D) 1.01 kHz 
A) 1.18 kHz 
B) 995 Hz 
C) 1.81 kHz 
D) 1.01 kHz

Question 14

-What is the circuit's impedance in Figure 10 -1?

Accepted Answer

A) 520 Ω 
B) 418 Ω 
C) 280 Ω 
D) 120 Ω 
A) 520 Ω 
B) 418 Ω 
C) 280 Ω 
D) 120 Ω

Question 15

-What is the true power in Figure 10 -1?

Accepted Answer

A) 5.73 W 
B) 916 mW 
C) 275 mW 
D) 5.73 mW 
A) 5.73 W 
B) 916 mW 
C) 275 mW 
D) 5.73 mW

Question 16

As the frequency applied to an RC circuit increases, the impedance decreases.

Accepted Answer

A) True 
 B)False

Question 17

-What is the output voltage at the cutoff frequency in Figure 10 -3?

Accepted Answer

A) 31.1 V 
B) 6.45 V 
C) 15.6 V 
D) 22 V 
A) 31.1 V 
B) 6.45 V 
C) 15.6 V 
D) 22 V

Question 18

-If the input voltage increases to 50 V in Figure 10 -3, what is the output voltage at the cutoff frequency?

Accepted Answer

A) 35.4 V 
B) 17.7 V 
C) 70.7 V 
D) 8.84 V 
A) 35.4 V 
B) 17.7 V 
C) 70.7 V 
D) 8.84 V

Question 19

-If the output were taken across the resistor in Figure 10 -3, the circuit would be known as a .

Accepted Answer

A) low -pass filter 
B) band -notch filter 
C) band -pass filter 
D) high -pass filter 
A) low -pass filter 
B) band -notch filter 
C) band -pass filter 
D) high -pass filter

Question 20

-If the resistance is reduced to 4 kΩ in Figure 10 -3, the cutoff frequency equals .

Accepted Answer

A) 480 Hz 
B) 6250 Hz 
C) 995 Hz 
D) 99 Hz 
A) 480 Hz 
B) 6250 Hz 
C) 995 Hz 
D) 99 Hz

-What change would increase the power factor in Figure 10 -2?

-If the operating frequency decreases in Figure 10 -1, how does the capacitance value change?

When the frequency applied to an RC circuit varies, the value of XC varies.

A leaky capacitor can be equated as a capacitor with a resistor being placed in series with it.

-If the operating frequency decreases in Figure 10 -1, how does the current change?

-If the frequency increases in Figure 10 -1, the phase angle and the impedance _.

The total current in an RC circuit always leads the source voltage.

-What change would decrease the power factor in Figure 10 -2?

In a X10 oscilloscope probe input resistance is factor of 10. _ and input capacitance is _ by a

-If the frequency decreases in Figure 10 -1, the phase angle and the impedance _.

-If the operating frequency decreases in Figure 10 -1, how does the resistance value change?

-If the frequency is 400 Hz in Figure 10 -1, what is the value of capacitance?

-If the resistor changes to 2.2 kΩ in Figure 10 -3, the new cutoff frequency equals .

-What is the circuit's impedance in Figure 10 -1?

-What is the true power in Figure 10 -1?

As the frequency applied to an RC circuit increases, the impedance decreases.

-What is the output voltage at the cutoff frequency in Figure 10 -3?

-If the input voltage increases to 50 V in Figure 10 -3, what is the output voltage at the cutoff frequency?

-If the output were taken across the resistor in Figure 10 -3, the circuit would be known as a .

-If the resistance is reduced to 4 kΩ in Figure 10 -3, the cutoff frequency equals .

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

Inductors

Rlcircuits

Rlccircuits and Resonance

Transformers

Time Response of Reactive Circuits

Filters

Exam 10: Rccircuits

-What change would increase the power factor in Figure 10 -2?

-If the operating frequency decreases in Figure 10 -1, how does the capacitance value change?

When the frequency applied to an RC circuit varies, the value of XC varies.

A leaky capacitor can be equated as a capacitor with a resistor being placed in series with it.

-If the operating frequency decreases in Figure 10 -1, how does the current change?

-If the frequency increases in Figure 10 -1, the phase angle and the impedance _.

The total current in an RC circuit always leads the source voltage.

-What change would decrease the power factor in Figure 10 -2?

In a X10 oscilloscope probe input resistance is factor of 10. _ and input capacitance is _ by a

-If the frequency decreases in Figure 10 -1, the phase angle and the impedance _.

-If the operating frequency decreases in Figure 10 -1, how does the resistance value change?

-If the frequency is 400 Hz in Figure 10 -1, what is the value of capacitance?

-If the resistor changes to 2.2 kΩ in Figure 10 -3, the new cutoff frequency equals .

-What is the circuit's impedance in Figure 10 -1?

-What is the true power in Figure 10 -1?

As the frequency applied to an RC circuit increases, the impedance decreases.

-What is the output voltage at the cutoff frequency in Figure 10 -3?

-If the input voltage increases to 50 V in Figure 10 -3, what is the output voltage at the cutoff frequency?

-If the output were taken across the resistor in Figure 10 -3, the circuit would be known as a .

-If the resistance is reduced to 4 kΩ in Figure 10 -3, the cutoff frequency equals .

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

Inductors

Rlcircuits

Rlccircuits and Resonance

Transformers

Time Response of Reactive Circuits

Filters