Question 1

$$\text { Figure } 10 < 1$$
-What is the true power in Figure 10-1?

Accepted Answer

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

Question 2

If there is 1 ARMS through the resistor and 1 ARMS through the capacitor in a parallel RC circuit, then the total current equals

Accepted Answer

A)   2.28  ARMS 
B)   1.41  ARMS 
C)  1 ARMS 
D)  2 ARMS 
A)   2.28  ARMS 
B)   1.41  ARMS 
C)  1 ARMS 
D)  2 ARMS

Question 3

$$\text { Figure } 10 < 3$$
-If the input voltage increases to 50 V in Figure 10-3,What is the output voltage at the cutoff frequency?

Accepted Answer

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

Question 4

$$\text { Figure } 10 < 3$$
-If the resistor changes to  2.2 $\mathrm { k } \Omega$  in Figure  10-3 , the new cut off frequency equals

Accepted Answer

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

Question 5

If the true power is  100 W and the reactive power is  100 VAR , the apparent power is

Accepted Answer

A)   141 W 
B)   200 VA 
C)   141 VA 
D)   100 VA 
A)   141 W 
B)   200 VA 
C)   141 VA 
D)   100 VA

Question 6

$$\text { Figure } 10 < 2$$
-If the resistor value increases in Figure 10-2, then how does the total 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 7

As the frequency applied to an  RC  circuit varies, both  XC  and resistance vary.

Accepted Answer

A) True 
 B)False

Question 8

$$\text { Figure } 10 < 1$$
-Calculate the voltage drop across the capacitor in Figure 10-1.

Accepted Answer

A) 4.82V 
B) 3.69V 
C) 14.4V 
D) 11.5V 
A) 4.82V 
B) 3.69V 
C) 14.4V 
D) 11.5V

Question 9

If the bandwidth of a low-pass filter is 0 to 1 kHz, the cutoff frequency is ________.

Accepted Answer

A) 500 Hz 
B) 1 kHz 
C) 2 kHz 
D) 0 Hz 
A) 500 Hz 
B) 1 kHz 
C) 2 kHz 
D) 0 Hz

Question 10

$$\text { Figure } 10 < 4$$
-This frequency response curve in Figure 10-4 representsW hat type of filter?

Accepted Answer

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

Question 11

$$\text { Figure } 10 < 1$$
-If the resistor changes to  2.2  $\mathrm { k } \Omega$ in Figure 10-1, how does the total 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 12

An RC high pass filter takes its output across:

Accepted Answer

A) the parallel resistor. 
B) the parallel capacitor. 
C) the series resistor. 
D) the series capacitor. 
A) the parallel resistor. 
B) the parallel capacitor. 
C) the series resistor. 
D) the series capacitor.

Question 13

Which of these troubleshooting procedures should be performed first?

Accepted Answer

A) Slap the device firmly to dislodge foreign objects. 
B) Take random measurements around point of failure. 
C) Analyze the problem and decide Where best to start. 
D) Check test equipment connections. 
A) Slap the device firmly to dislodge foreign objects. 
B) Take random measurements around point of failure. 
C) Analyze the problem and decide Where best to start. 
D) Check test equipment connections.

Question 14

In a series RC circuit, as the phase angle between the applied voltage and the total current increases, this is the same as:

Accepted Answer

A) apparent power decreasing. 
B) power factor increasing. 
C) power factor decreasing. 
D) true power decreasing. 
A) apparent power decreasing. 
B) power factor increasing. 
C) power factor decreasing. 
D) true power decreasing.

Question 15

$$\text { Figure } 10 < 1$$
-Calculate the apparent power in Figure 10-1.

Accepted Answer

A) 5.99V 
B) 1.70V 
C) 5.66V 
D) 14.37V 
A) 5.99V 
B) 1.70V 
C) 5.66V 
D) 14.37V

Question 16

An RC circuit can be used as a filter to eliminate selected frequencies

Accepted Answer

A) True 
 B)False

Question 17

$$\text { Figure } 10 < 2$$
-What change would decrease the power factor in Figure  10-2  ?

Accepted Answer

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

Question 18

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

Accepted Answer

A) True 
 B)False

Question 19

When an  AC voltage is supplied to an RC circuit, the AC's current and amplitude will be:

Accepted Answer

A)  varying in the same manner. 
B)  leading the voltage. 
C)  similar in waveform. 
D)  all of these. 
A)  varying in the same manner. 
B)  leading the voltage. 
C)  similar in waveform. 
D)  all of these.

Question 20

$$\text { Figure } 10 < 3$$
-The circuit in Figure 10-3 is known as a ________.

Accepted Answer

A) high-pass filter 
B) parallel RC circuit 
C) low-pass filter 
D) band-pass filter 
A) high-pass filter 
B) parallel RC circuit 
C) low-pass filter 
D) band-pass filter

$\text { Figure } 10 < 1 -What is the true power in Figure 10-1?$ $\text { Figure } 10 < 1$ -What is the true power in Figure 10-1?

If there is 1 A_RMS through the resistor and 1 A_RMS through the capacitor in a parallel RC circuit, then the total current equals

$\text { Figure } 10 < 3 -If the input voltage increases to 50 V in Figure 10-3,What is the output voltage at the cutoff frequency?$ $\text { Figure } 10 < 3$ -If the input voltage increases to 50 V in Figure 10-3,What is the output voltage at the cutoff frequency?

$\text { Figure } 10 < 3 -If the resistor changes to 2.2 \mathrm { k } \Omega in Figure 10-3 , the new cut off frequency equals$ $\text { Figure } 10 < 3$ -If the resistor changes to 2.2 $\mathrm { k } \Omega$ in Figure 10-3 , the new cut off frequency equals

If the true power is 100 W and the reactive power is 100 VAR , the apparent power is

$\text { Figure } 10 < 2 -If the resistor value increases in Figure 10-2, then how does the total current change?$ $\text { Figure } 10 < 2$ -If the resistor value increases in Figure 10-2, then how does the total current change?

As the frequency applied to an RC circuit varies, both X_C and resistance vary.

$\text { Figure } 10 < 1 -Calculate the voltage drop across the capacitor in Figure 10-1.$ $\text { Figure } 10 < 1$ -Calculate the voltage drop across the capacitor in Figure 10-1.

If the bandwidth of a low-pass filter is 0 to 1 kHz, the cutoff frequency is ________.

$\text { Figure } 10 < 4 -This frequency response curve in Figure 10-4 representsW hat type of filter?$ $\text { Figure } 10 < 4$ -This frequency response curve in Figure 10-4 representsW hat type of filter?

$\text { Figure } 10 < 1 -If the resistor changes to 2.2 \mathrm { k } \Omega in Figure 10-1, how does the total current change?$ $\text { Figure } 10 < 1$ -If the resistor changes to 2.2 $\mathrm { k } \Omega$ in Figure 10-1, how does the total current change?

An RC high pass filter takes its output across:

Which of these troubleshooting procedures should be performed first?

In a series RC circuit, as the phase angle between the applied voltage and the total current increases, this is the same as:

$\text { Figure } 10 < 1 -Calculate the apparent power in Figure 10-1.$ $\text { Figure } 10 < 1$ -Calculate the apparent power in Figure 10-1.

An RC circuit can be used as a filter to eliminate selected frequencies

$\text { Figure } 10 < 2 -What change would decrease the power factor in Figure 10-2 ?$ $\text { Figure } 10 < 2$ -What change would decrease the power factor in Figure 10-2 ?

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

When an AC voltage is supplied to an RC circuit, the AC's current and amplitude will be:

$\text { Figure } 10 < 3 -The circuit in Figure 10-3 is known as a .$ $\text { Figure } 10 < 3$ -The circuit in Figure 10-3 is known as a .

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

Figure 10<1\text { Figure } 10 < 1 Figure 10<1 -What is the true power in Figure 10-1?

If there is 1 ARMS through the resistor and 1 ARMS through the capacitor in a parallel RC circuit, then the total current equals

Figure 10<3\text { Figure } 10 < 3 Figure 10<3 -If the input voltage increases to 50 V in Figure 10-3,What is the output voltage at the cutoff frequency?

Figure 10<3\text { Figure } 10 < 3 Figure 10<3 -If the resistor changes to 2.2 kΩ\mathrm { k } \OmegakΩ in Figure 10-3 , the new cut off frequency equals

If the true power is 100 W and the reactive power is 100 VAR , the apparent power is

Figure 10<2\text { Figure } 10 < 2 Figure 10<2 -If the resistor value increases in Figure 10-2, then how does the total current change?

As the frequency applied to an RC circuit varies, both XC and resistance vary.

Figure 10<1\text { Figure } 10 < 1 Figure 10<1 -Calculate the voltage drop across the capacitor in Figure 10-1.

If the bandwidth of a low-pass filter is 0 to 1 kHz, the cutoff frequency is ________.

Figure 10<4\text { Figure } 10 < 4 Figure 10<4 -This frequency response curve in Figure 10-4 representsW hat type of filter?

Figure 10<1\text { Figure } 10 < 1 Figure 10<1 -If the resistor changes to 2.2 kΩ\mathrm { k } \OmegakΩ in Figure 10-1, how does the total current change?

An RC high pass filter takes its output across:

Which of these troubleshooting procedures should be performed first?

In a series RC circuit, as the phase angle between the applied voltage and the total current increases, this is the same as:

Figure 10<1\text { Figure } 10 < 1 Figure 10<1 -Calculate the apparent power in Figure 10-1.

An RC circuit can be used as a filter to eliminate selected frequencies

Figure 10<2\text { Figure } 10 < 2 Figure 10<2 -What change would decrease the power factor in Figure 10-2 ?

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

When an AC voltage is supplied to an RC circuit, the AC's current and amplitude will be:

Figure 10<3\text { Figure } 10 < 3 Figure 10<3 -The circuit in Figure 10-3 is known as a ________.

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

$\text { Figure } 10 < 1 -What is the true power in Figure 10-1?$ $\text { Figure } 10 < 1$ -What is the true power in Figure 10-1?

If there is 1 A_RMS through the resistor and 1 A_RMS through the capacitor in a parallel RC circuit, then the total current equals

$\text { Figure } 10 < 3 -If the input voltage increases to 50 V in Figure 10-3,What is the output voltage at the cutoff frequency?$ $\text { Figure } 10 < 3$ -If the input voltage increases to 50 V in Figure 10-3,What is the output voltage at the cutoff frequency?

$\text { Figure } 10 < 3 -If the resistor changes to 2.2 \mathrm { k } \Omega in Figure 10-3 , the new cut off frequency equals$ $\text { Figure } 10 < 3$ -If the resistor changes to 2.2 $\mathrm { k } \Omega$ in Figure 10-3 , the new cut off frequency equals

$\text { Figure } 10 < 2 -If the resistor value increases in Figure 10-2, then how does the total current change?$ $\text { Figure } 10 < 2$ -If the resistor value increases in Figure 10-2, then how does the total current change?

As the frequency applied to an RC circuit varies, both X_C and resistance vary.

$\text { Figure } 10 < 1 -Calculate the voltage drop across the capacitor in Figure 10-1.$ $\text { Figure } 10 < 1$ -Calculate the voltage drop across the capacitor in Figure 10-1.

$\text { Figure } 10 < 4 -This frequency response curve in Figure 10-4 representsW hat type of filter?$ $\text { Figure } 10 < 4$ -This frequency response curve in Figure 10-4 representsW hat type of filter?

$\text { Figure } 10 < 1 -If the resistor changes to 2.2 \mathrm { k } \Omega in Figure 10-1, how does the total current change?$ $\text { Figure } 10 < 1$ -If the resistor changes to 2.2 $\mathrm { k } \Omega$ in Figure 10-1, how does the total current change?

$\text { Figure } 10 < 1 -Calculate the apparent power in Figure 10-1.$ $\text { Figure } 10 < 1$ -Calculate the apparent power in Figure 10-1.

$\text { Figure } 10 < 2 -What change would decrease the power factor in Figure 10-2 ?$ $\text { Figure } 10 < 2$ -What change would decrease the power factor in Figure 10-2 ?

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

$\text { Figure } 10 < 3 -The circuit in Figure 10-3 is known as a .$ $\text { Figure } 10 < 3$ -The circuit in Figure 10-3 is known as a .