Question 1

What would we call a 0.000000000001 F capacitor?

Accepted Answer

A)  1 F 
B)  1 pF 
C)  0.001 F 
D)  1 µF 
A)  1 F 
B)  1 pF 
C)  0.001 F 
D)  1 µF B

Question 2

Increasing the plate area of a capacitor increases the capacitance.

Accepted Answer

A) True 
 B)False  True

Question 3

Write the word or phrase that best completes each statement or answers the question.
Complete the following tables: Frequency = 60 Hz
-Capacitance Reactance 0.01 µF __________

Accepted Answer

159.2 Ω

Question 4

Write the word or phrase that best completes each statement or answers the question.
Complete the following tables: Frequency = 60 Hz
-Capacitance Reactance 0.47 µF __________

Accepted Answer

The answer of Write the word or phrase that best...

Question 5

Write the word or phrase that best completes each statement or answers the question.
Complete the following tables: Frequency = 60 Hz
-Capacitance Reactance 100 µF __________

Accepted Answer

The answer of Write the word or phrase that best...

Question 6

Figure 12-4
-Given the circuit in Figure 12-4, what is the approximate voltage across the capacitor at the end of 1 second after the 10V source is connected?

Accepted Answer

A)  10 V 
B)  6.3 V 
C)  63 V 
D)  0.707 V 
A)  10 V 
B)  6.3 V 
C)  63 V 
D)  0.707 V

Question 7

-Three 2 µF capacitors are connected in parallel. What is the total capacitance?

Accepted Answer

A)  6.0 µF 
B)  2.0 µF 
C)  66.0 µF 
D)  0.66 µF 
A)  6.0 µF 
B)  2.0 µF 
C)  66.0 µF 
D)  0.66 µF

Question 8

Write the word or phrase that best completes each statement or answers the question.
Complete the following tables: Frequency = 60 Hz
-Capacitance Reactance 1.0 µF __________

Accepted Answer

The answer of Write the word or phrase that best...

Question 9

Figure 12-1
-The material used in between the plates of a capacitor is called the dielectric.

Accepted Answer

A) True 
 B)False

Question 10

Write the word or phrase that best completes each statement or answers the question.
Complete the following tables: Frequency = 60 Hz
-Capacitance Reactance 1000 pF __________

Accepted Answer

The answer of Write the word or phrase that best...

Question 11

A capacitor has a plate area of 0.01 square meters. A second capacitor has a plate area of 0.02 square meters. If the first capacitor is 0.1 µF, what is the value of the second capacitor if all other physical characteristics are identical?

Accepted Answer

A)  0.2 µF 
B)  0.05 µF 
C)  0.1 µF 
D)  0.4 µF 
A)  0.2 µF 
B)  0.05 µF 
C)  0.1 µF 
D)  0.4 µF

Question 12

Write the word or phrase that best completes each statement or answers the question.
Complete the following tables: Frequency = 60 Hz
-Capacitance Reactance 1.0 µF __________

Accepted Answer

The answer of Write the word or phrase that best...

Question 13

Write the word or phrase that best completes each statement or answers the question.
Complete the following tables: Frequency = 60 Hz
-Capacitance Reactance 0.001 µF __________

Accepted Answer

The answer of Write the word or phrase that best...

Question 14

Figure 12-1
-Calculate the equivalent capacitance of the three series capacitors in Figure 12-1.

Accepted Answer

A)  0.8 µF 
B)  0.060 µF 
C)  0.01 µF 
D)  0.58 µF 
A)  0.8 µF 
B)  0.060 µF 
C)  0.01 µF 
D)  0.58 µF

Question 15

Switched-capacitor circuits:

Accepted Answer

A)  can be used in programmable circuits 
B)  can be readily changed by reprogramming. 
C)  Both A and B 
D)  none of the above 
A)  can be used in programmable circuits 
B)  can be readily changed by reprogramming. 
C)  Both A and B 
D)  none of the above

Question 16

Write the word or phrase that best completes each statement or answers the question.
Complete the following tables: Frequency = 60 Hz
-Capacitance Reactance 4000 µF __________

Accepted Answer

The answer of Write the word or phrase that best...

Question 17

Current lags the voltage by 90 degrees in a capacitor.

Accepted Answer

A) True 
 B)False

Question 18

Figure 12-1
-A discharged capacitor has a positive charge on its plates.

Accepted Answer

A) True 
 B)False

Question 19

Using the formula for capacitive reactance, as frequency decreases:

Accepted Answer

A)  capacitive reactance decreases 
B)  capacitive reactance changes by 90 degrees 
C)  capacitive reactance remains the same 
D)  capacitive reactance increases 
A)  capacitive reactance decreases 
B)  capacitive reactance changes by 90 degrees 
C)  capacitive reactance remains the same 
D)  capacitive reactance increases

Question 20

Figure 12-2
-Calculate the equivalent value of the parallel capacitors in Figure 12-2.

Accepted Answer

A)  15510 µF 
B)  227.24 µF 
C)  90 µF 
D)  4.7 µF 
A)  15510 µF 
B)  227.24 µF 
C)  90 µF 
D)  4.7 µF

Exam 12: Capacitors

What would we call a 0.000000000001 F capacitor?

Increasing the plate area of a capacitor increases the capacitance.

Write the word or phrase that best completes each statement or answers the question. Complete the following tables: Frequency = 60 Hz -Capacitance Reactance 0.01 µF __________

Write the word or phrase that best completes each statement or answers the question. Complete the following tables: Frequency = 60 Hz -Capacitance Reactance 0.47 µF __________

Write the word or phrase that best completes each statement or answers the question. Complete the following tables: Frequency = 60 Hz -Capacitance Reactance 100 µF __________

Figure 12-4 -Given the circuit in Figure 12-4, what is the approximate voltage across the capacitor at the end of 1 second after the 10V source is connected?

-Three 2 µF capacitors are connected in parallel. What is the total capacitance?

Write the word or phrase that best completes each statement or answers the question. Complete the following tables: Frequency = 60 Hz -Capacitance Reactance 1.0 µF __________

Figure 12-1 -The material used in between the plates of a capacitor is called the dielectric.

Write the word or phrase that best completes each statement or answers the question. Complete the following tables: Frequency = 60 Hz -Capacitance Reactance 1000 pF __________

A capacitor has a plate area of 0.01 square meters. A second capacitor has a plate area of 0.02 square meters. If the first capacitor is 0.1 µF, what is the value of the second capacitor if all other physical characteristics are identical?

Write the word or phrase that best completes each statement or answers the question. Complete the following tables: Frequency = 60 Hz -Capacitance Reactance 1.0 µF __________

Write the word or phrase that best completes each statement or answers the question. Complete the following tables: Frequency = 60 Hz -Capacitance Reactance 0.001 µF __________

Figure 12-1 -Calculate the equivalent capacitance of the three series capacitors in Figure 12-1.

Switched-capacitor circuits:

Write the word or phrase that best completes each statement or answers the question. Complete the following tables: Frequency = 60 Hz -Capacitance Reactance 4000 µF __________

Current lags the voltage by 90 degrees in a capacitor.

Figure 12-1 -A discharged capacitor has a positive charge on its plates.

Using the formula for capacitive reactance, as frequency decreases:

Figure 12-2 -Calculate the equivalent value of the parallel capacitors in Figure 12-2.

Quantities and Units

Voltage, Current, and Resistance

Ohms Law

Energy and Power

Series Circuits

Parallel Circuits

Series-Parallel Circuits

Circuit Theorems and Conversions

Branch, Loop, and Node Analyses

Magnetism and Electromagnetism

Introduction to Alternating Current and Voltage

Inductors

Transformers

Rc Circuits

Rl Circuits

Rlc Circuits and Resonance

Passive Filters

Circuit Theorems in Ac Analysis

Time Response of Reactive Circuits

Three-Phase Systems in Power Applications

Filters