Question 1

-How much voltage does the resistor drop in Figure 10 -2?

Accepted Answer

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

Question 2

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

Accepted Answer

A) True 
 B)False  True

Question 3

-How much voltage does the capacitor drop in Figure 10 -2?

Accepted Answer

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

Question 4

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

Accepted Answer

A) True 
 B)False

Question 5

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

Question 6

-This frequency response curve in Figure 10 -4 represents what type of filter?

Accepted Answer

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

Question 7

-If the frequency equals 60 Hz in Figure 10 -1, what is the value of capacitance?

Accepted Answer

A) 88 µF 
B) 66 µF 
C) 22 µF 
D) 44 µF 
A) 88 µF 
B) 66 µF 
C) 22 µF 
D) 44 µF

Question 8

A VA rating is more relevant when judging the current delivery capacity for a given signal source.

Accepted Answer

A) True 
 B)False

Question 9

-The circuit in Figure 10 -3 is known as a _ .

Accepted Answer

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

Question 10

An RC high pass filter takes its output across:

Accepted Answer

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

Question 11

-What is the circuit fault in Figure 10 -3 if the output voltage equals 0 V at the cutoff frequency?

Accepted Answer

A) The capacitor has opened. 
B) The capacitor has become leaky. 
C) The capacitor has shorted. 
D) The resistor has shorted. 
A) The capacitor has opened. 
B) The capacitor has become leaky. 
C) The capacitor has shorted. 
D) The resistor has shorted.

Question 12

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

Accepted Answer

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

Question 13

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

Accepted Answer

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

Question 14

Simple RC circuits can be viewed as what type of filter?

Accepted Answer

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

Question 15

-If the resistor value increases in Figure 10 -2, then how does the total current change?

Accepted Answer

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

Question 16

-Calculate the voltage drop across the capacitor in Figure 10 -1.

Accepted Answer

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

Question 17

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

Accepted Answer

A) It decreases. 
B) It increases. 
C) It changes to another quadrant. 
D) It remains the same. 
A) It decreases. 
B) It increases. 
C) It changes to another quadrant. 
D) It remains the same.

Question 18

Power in an RC circuit can be measured as:

Accepted Answer

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

Question 19

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

Accepted Answer

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

Question 20

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

Accepted Answer

A) True 
 B)False

-How much voltage does the resistor drop in Figure 10 -2?

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

-How much voltage does the capacitor drop in Figure 10 -2?

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

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

-This frequency response curve in Figure 10 -4 represents what type of filter?

-If the frequency equals 60 Hz in Figure 10 -1, what is the value of capacitance?

A VA rating is more relevant when judging the current delivery capacity for a given signal source.

-The circuit in Figure 10 -3 is known as a _ .

An RC high pass filter takes its output across:

-What is the circuit fault in Figure 10 -3 if the output voltage equals 0 V at the cutoff frequency?

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

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

Simple RC circuits can be viewed as what type of filter?

-If the resistor value increases in Figure 10 -2, then how does the total current change?

-Calculate the voltage drop across the capacitor in Figure 10 -1.

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

Power in an RC circuit can be measured as:

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

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

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

-How much voltage does the resistor drop in Figure 10 -2?

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

-How much voltage does the capacitor drop in Figure 10 -2?

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

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

-This frequency response curve in Figure 10 -4 represents what type of filter?

-If the frequency equals 60 Hz in Figure 10 -1, what is the value of capacitance?

A VA rating is more relevant when judging the current delivery capacity for a given signal source.

-The circuit in Figure 10 -3 is known as a _ .

An RC high pass filter takes its output across:

-What is the circuit fault in Figure 10 -3 if the output voltage equals 0 V at the cutoff frequency?

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

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

Simple RC circuits can be viewed as what type of filter?

-If the resistor value increases in Figure 10 -2, then how does the total current change?

-Calculate the voltage drop across the capacitor in Figure 10 -1.

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

Power in an RC circuit can be measured as:

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

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

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