Question 1

The phase angle of an RC circuit varies inverselyW ith frequency.

Accepted Answer

A) True 
 B)False

Question 2

$$\text { Figure } 10 < 1$$
-If the operating frequency decreases in Figure 10-1, how does the current change?

Accepted Answer

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

Question 3

$$\text { Figure } 10 < 1$$
-If the frequency decreases in Figure 10-1, the phase angle ________ and the impedance ________.

Accepted Answer

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

Question 4

An RC lag network is similar to a:

Accepted Answer

A) stop pass filter. 
B) high pass filter. 
C) low pass filter. 
D) band pass filter. 
A) stop pass filter. 
B) high pass filter. 
C) low pass filter. 
D) band pass filter.

Question 5

Power in an RC circuit can be measured as:

Accepted Answer

A)  true power (Ptrue). 
B)  apparent power  (Pa) . 
C)  reactive power  (Pr) . 
D)  all of these. 
A)  true power (Ptrue). 
B)  apparent power  (Pa) . 
C)  reactive power  (Pr) . 
D)  all of these.

Question 6

$$\text { Figure } 10 < 3$$
-If the resistor is changed to 100 $\mathrm { k } \Omega$ in Figure  10-3 , what is the new cutoff frequency?

Accepted Answer

A)   159 Hz 
B)   79.6 Hz 
C)   39.8 Hz 
D)   318 Hz 
A)   159 Hz 
B)   79.6 Hz 
C)   39.8 Hz 
D)   318 Hz

Question 7

$$\text { Figure } 10 < 2$$
-Calculate the total impedance in Figure 10-2.

Accepted Answer

A)   62$\Omega$ 
B)     
C)   1000$\Omega$ 
D)   258$\Omega$ 
A)   62$\Omega$ 
B)     
C)   1000$\Omega$ 
D)   258$\Omega$

Question 8

A power factor of 1 indicates that the circuit phase angle is

Accepted Answer

A)   90° 
B)   45° 
C)   0° 
D)   180° 
A)   90° 
B)   45° 
C)   0° 
D)   180°

Question 9

If there is  10 VRMS  across the resistor and  10VRMS across the capacitor in a series RC circuit, then the source voltage equals

Accepted Answer

A)   14.1 VRMS 
B)   28.3 VRMS 
C)   20 VRMS 
D)   10 VRMS 
A)   14.1 VRMS 
B)   28.3 VRMS 
C)   20 VRMS 
D)   10 VRMS

Question 10

$$\text { Figure } 10 < 1$$
-If the source voltage is changed to 100 V in Figure 10-1, find the true power.

Accepted Answer

A) 22.9 mW 
B) 3.66W 
C) 22.9W 
D) 11W 
A) 22.9 mW 
B) 3.66W 
C) 22.9W 
D) 11W

Question 11

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 12

$$\text { Figure } 10 < 2$$
-How much voltage does the capacitor drop in Figure 10-2?

Accepted Answer

A) 20V 
B) 19.94V 
C) 59 mV 
D) 10V 
A) 20V 
B) 19.94V 
C) 59 mV 
D) 10V

Question 13

Simple RC circuits can be viewed asW hat type of filter?

Accepted Answer

A) active 
B) high pass 
C) passive 
D) low pass 
A) active 
B) high pass 
C) passive 
D) low pass

Question 14

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

Accepted Answer

A) True 
 B)False

Question 15

\[\text { Figure } 10 C  and IR in Figure 10-2?

Accepted Answer

A)  IC leads IR. 
B)  They are in phase. 
C)  IC lags IR. 
D)  They are  180°  out of phase. 
A)  IC leads IR. 
B)  They are in phase. 
C)  IC lags IR. 
D)  They are  180°  out of phase.

Question 16

It has been determined that the phase shift of a given parallel RC circuit is lower than predicted. Which of the following most likely has caused this?

Accepted Answer

A) Resistance has decreased. 
B) The function generator frequency control has been accidentally moved to a lower frequency. 
C) The capacitance has decreased. 
D) could be A or C 
A) Resistance has decreased. 
B) The function generator frequency control has been accidentally moved to a lower frequency. 
C) The capacitance has decreased. 
D) could be A or C

Question 17

$$\text { Figure } 10 < 1$$
-If the operating frequency increases in Figure 10-1, how does the resistor value change?

Accepted Answer

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

Question 18

$$\text { Figure } 10 < 3$$
-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) high-pass filter 
C) band-notch filter 
D) band-pass filter 
A) low-pass filter 
B) high-pass filter 
C) band-notch filter 
D) band-pass filter

Question 19

$$\text { Figure } 10 < 1$$
-If the operating frequency increases in Figure 10-1, how does the current change?

Accepted Answer

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

Question 20

The total current in an RC circuit always lags the source Voltage.

Accepted Answer

A) True 
 B)False

The phase angle of an RC circuit varies inverselyW ith frequency.

$\text { Figure } 10 < 1 -If the operating frequency decreases in Figure 10-1, how does the current change?$ $\text { Figure } 10 < 1$ -If the operating frequency decreases in Figure 10-1, how does the current change?

$\text { Figure } 10 < 1 -If the frequency decreases in Figure 10-1, the phase angle and the impedance .$ $\text { Figure } 10 < 1$ -If the frequency decreases in Figure 10-1, the phase angle and the impedance .

An RC lag network is similar to a:

Power in an RC circuit can be measured as:

$\text { Figure } 10 < 3 -If the resistor is changed to 100 \mathrm { k } \Omega in Figure 10-3 , what is the new cutoff frequency?$ $\text { Figure } 10 < 3$ -If the resistor is changed to 100 $\mathrm { k } \Omega$ in Figure 10-3 , what is the new cutoff frequency?

$\text { Figure } 10 < 2 -Calculate the total impedance in Figure 10-2.$ $\text { Figure } 10 < 2$ -Calculate the total impedance in Figure 10-2.

A power factor of 1 indicates that the circuit phase angle is

If there is 10 V_RMS across the resistor and 10V_RMS across the capacitor in a series RC circuit, then the source voltage equals

$\text { Figure } 10 < 1 -If the source voltage is changed to 100 V in Figure 10-1, find the true power.$ $\text { Figure } 10 < 1$ -If the source voltage is changed to 100 V in Figure 10-1, find the true power.

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

$\text { Figure } 10 < 2 -How much voltage does the capacitor drop in Figure 10-2?$ $\text { Figure } 10 < 2$ -How much voltage does the capacitor drop in Figure 10-2?

Simple RC circuits can be viewed asW hat type of filter?

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

$\text { Figure } 10 < 2 -Which statement describes the relationship of I<sub>C</sub> and I<sub>R</sub> in Figure 10-2?$ $\text { Figure } 10 < 2$ -Which statement describes the relationship of I_C and I_R in Figure 10-2?

It has been determined that the phase shift of a given parallel RC circuit is lower than predicted. Which of the following most likely has caused this?

$\text { Figure } 10 < 1 -If the operating frequency increases in Figure 10-1, how does the resistor value change?$ $\text { Figure } 10 < 1$ -If the operating frequency increases in Figure 10-1, how does the resistor value change?

$\text { Figure } 10 < 3 -If the output Were taken across the resistor in Figure 10-3, the circuit Would be known as a .$ $\text { Figure } 10 < 3$ -If the output Were taken across the resistor in Figure 10-3, the circuit Would be known as a .

$\text { Figure } 10 < 1 -If the operating frequency increases in Figure 10-1, how does the current change?$ $\text { Figure } 10 < 1$ -If the operating frequency increases in Figure 10-1, how does the current change?

The total current in an RC circuit always lags the source Voltage.

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

Rl Circuits

Rlc Circuits and Resonance

Time Response of Reactive Circuits

Transformers

Regulators, Filters, and Op-Amps

Understanding Transducers, Sensors, and Conversion in Industrial Processes

Filters

Exam 10: Rc Circuits

The phase angle of an RC circuit varies inverselyW ith frequency.

Figure 10<1\text { Figure } 10 < 1 Figure 10<1 -If the operating frequency decreases in Figure 10-1, how does the current change?

Figure 10<1\text { Figure } 10 < 1 Figure 10<1 -If the frequency decreases in Figure 10-1, the phase angle ________ and the impedance ________.

An RC lag network is similar to a:

Power in an RC circuit can be measured as:

Figure 10<3\text { Figure } 10 < 3 Figure 10<3 -If the resistor is changed to 100 kΩ\mathrm { k } \OmegakΩ in Figure 10-3 , what is the new cutoff frequency?

Figure 10<2\text { Figure } 10 < 2 Figure 10<2 -Calculate the total impedance in Figure 10-2.

A power factor of 1 indicates that the circuit phase angle is

If there is 10 VRMS across the resistor and 10VRMS across the capacitor in a series RC circuit, then the source voltage equals

Figure 10<1\text { Figure } 10 < 1 Figure 10<1 -If the source voltage is changed to 100 V in Figure 10-1, find the true power.

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

Figure 10<2\text { Figure } 10 < 2 Figure 10<2 -How much voltage does the capacitor drop in Figure 10-2?

Simple RC circuits can be viewed asW hat type of filter?

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

Figure 10<2\text { Figure } 10 < 2 Figure 10<2 -Which statement describes the relationship of IC and IR in Figure 10-2?

It has been determined that the phase shift of a given parallel RC circuit is lower than predicted. Which of the following most likely has caused this?

Figure 10<1\text { Figure } 10 < 1 Figure 10<1 -If the operating frequency increases in Figure 10-1, how does the resistor value change?

Figure 10<3\text { Figure } 10 < 3 Figure 10<3 -If the output Were taken across the resistor in Figure 10-3, the circuit Would be known as a ________.

Figure 10<1\text { Figure } 10 < 1 Figure 10<1 -If the operating frequency increases in Figure 10-1, how does the current change?

The total current in an RC circuit always lags the source Voltage.

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

Rl Circuits

Rlc Circuits and Resonance

Time Response of Reactive Circuits

Transformers

Regulators, Filters, and Op-Amps

Understanding Transducers, Sensors, and Conversion in Industrial Processes

Filters

$\text { Figure } 10 < 1 -If the operating frequency decreases in Figure 10-1, how does the current change?$ $\text { Figure } 10 < 1$ -If the operating frequency decreases in Figure 10-1, how does the current change?

$\text { Figure } 10 < 1 -If the frequency decreases in Figure 10-1, the phase angle and the impedance .$ $\text { Figure } 10 < 1$ -If the frequency decreases in Figure 10-1, the phase angle and the impedance .

$\text { Figure } 10 < 3 -If the resistor is changed to 100 \mathrm { k } \Omega in Figure 10-3 , what is the new cutoff frequency?$ $\text { Figure } 10 < 3$ -If the resistor is changed to 100 $\mathrm { k } \Omega$ in Figure 10-3 , what is the new cutoff frequency?

$\text { Figure } 10 < 2 -Calculate the total impedance in Figure 10-2.$ $\text { Figure } 10 < 2$ -Calculate the total impedance in Figure 10-2.

If there is 10 V_RMS across the resistor and 10V_RMS across the capacitor in a series RC circuit, then the source voltage equals

$\text { Figure } 10 < 1 -If the source voltage is changed to 100 V in Figure 10-1, find the true power.$ $\text { Figure } 10 < 1$ -If the source voltage is changed to 100 V in Figure 10-1, find the true power.

$\text { Figure } 10 < 2 -How much voltage does the capacitor drop in Figure 10-2?$ $\text { Figure } 10 < 2$ -How much voltage does the capacitor drop in Figure 10-2?

$\text { Figure } 10 < 2 -Which statement describes the relationship of I<sub>C</sub> and I<sub>R</sub> in Figure 10-2?$ $\text { Figure } 10 < 2$ -Which statement describes the relationship of I_C and I_R in Figure 10-2?

$\text { Figure } 10 < 1 -If the operating frequency increases in Figure 10-1, how does the resistor value change?$ $\text { Figure } 10 < 1$ -If the operating frequency increases in Figure 10-1, how does the resistor value change?

$\text { Figure } 10 < 3 -If the output Were taken across the resistor in Figure 10-3, the circuit Would be known as a .$ $\text { Figure } 10 < 3$ -If the output Were taken across the resistor in Figure 10-3, the circuit Would be known as a .

$\text { Figure } 10 < 1 -If the operating frequency increases in Figure 10-1, how does the current change?$ $\text { Figure } 10 < 1$ -If the operating frequency increases in Figure 10-1, how does the current change?