QUESTION 1 1. The two basic kinds of transistor circuits are amplifying and switching.  True  False 2 points    QUESTION 2 1. The bridge rectifier is similar to a full-wave rectifier because it produces a full-wave output voltage.   True  False 2 points    QUESTION 3 1. A semiconductor is an element with electrical properties between those of a conductor and those of an insulator.  True  False 2 points    QUESTION 4 1. The dc beta is defined as the dc collector current divided by the dc emitter current.  True  False 2 points    QUESTION 5 1. An ideal diode acts like a switch that closes when forward-biased and opens when reverse-biased.  True  False 2 points    QUESTION 6 1. With a half-wave rectifier, the output frequency equals the input frequency.  True  False 2 points    QUESTION 7 1. A pure semiconductor is also referred to as: a clean room device intrinsic extrinsic transistor 4 points    QUESTION 8 1. Silicon that has been doped with a trivalent impurity is called a: N-type semiconductor P-type semiconductor P-N junction covalent bond 4 points    QUESTION 9 1. In a silicon atom, what is the distance between the valence band and the conduction band called? energy gap depletion layer P-N junction intrinsic 4 points    QUESTION 10 1. A diode is a nonlinear device because the graph of its current versus voltage is: a straight line not a straight line inversely proportional to the resistance exponential 4 points    QUESTION 11 1. Ideally, a diode acts like a perfect conductor when forward-biased and: like a perfect conductor when reverse-biased like a perfect semiconductor when reverse-biased like a perfect insulator when reverse-biased like a perfect diode when reverse-biased 4 points    QUESTION 12 1. A diode that exhibits high resistance in both directions when measured with an ohmmeter is: shorted leaky open a properly operating diode 4 points    QUESTION 13 1. The knee voltage of a germanium diode is approximately ________. 0.7 V 0.3 V 1.7 V 1.3 V 4 points    QUESTION 14 1. Much of the information on a manufacturer's data sheet is: necessary to understand diode circuits necessary to troubleshoot diode circuits obscure and of use only to circuit designers necessary only to electronics technicians 4 points    QUESTION 15 1. The output frequency of a half-wave rectifier is: twice the input frequency half the input frequency equal to the input frequency four times the input frequency 4 points    QUESTION 16 1. A step-up transformer will produce a secondary voltage that is: smaller than the primary equal to the primary larger than the primary rectified. 4 points    QUESTION 17 1. What is the name of the circuit shown in the Figure 1 below? Figure 1 half-wave rectifier full-wave rectifier bridge rectifier voltage doubler 4 points    QUESTION 18 1. Which region of the transistor is physically the largest? collector emitter base beta 4 points ...

1. QUESTION 1
1. The two basic kinds of transistor circuits are amplifying and
switching.
True
False
2 points
QUESTION 2
1. The bridge rectifier is similar to a full-wave rectifier because
it produces a full-wave output voltage.
True
False
2 points
QUESTION 3
1. A semiconductor is an element with electrical properties
between those of a conductor and those of an insulator.
True
False
2 points
QUESTION 4
1. The dc beta is defined as the dc collector current divided by
the dc emitter current.
True
False
2 points
QUESTION 5
1. An ideal diode acts like a switch that closes when forward-
biased and opens when reverse-biased.
True
False
2 points
QUESTION 6
1. With a half-wave rectifier, the output frequency equals the
input frequency.

2. True
False
2 points
QUESTION 7
1. A pure semiconductor is also referred to as:
a clean room device
intrinsic
extrinsic
transistor
4 points
QUESTION 8
1. Silicon that has been doped with a trivalent impurity is called
a:
N-type semiconductor
P-type semiconductor
P-N junction
covalent bond
4 points

3. QUESTION 9
1. In a silicon atom, what is the distance between the valence
band and the conduction band called?
energy gap
depletion layer
P-N junction
intrinsic
4 points
QUESTION 10
1. A diode is a nonlinear device because the graph of its current
versus voltage is:
a straight line
not a straight line
inversely proportional to the resistance
exponential
4 points
QUESTION 11
1. Ideally, a diode acts like a perfect conductor when forward-
biased and:

4. like a perfect conductor when reverse-biased
like a perfect semiconductor when reverse-biased
like a perfect insulator when reverse-biased
like a perfect diode when reverse-biased
4 points
QUESTION 12
1. A diode that exhibits high resistance in both directions when
measured with an ohmmeter is:
shorted
leaky
open
a properly operating diode
4 points
QUESTION 13
1. The knee voltage of a germanium diode is approximately
________.
0.7 V

5. 0.3 V
1.7 V
1.3 V
4 points
QUESTION 14
1. Much of the information on a manufacturer's data sheet is:
necessary to understand diode circuits
necessary to troubleshoot diode circuits
obscure and of use only to circuit designers
necessary only to electronics technicians
4 points
QUESTION 15
1. The output frequency of a half-wave rectifier is:
twice the input frequency
half the input frequency
equal to the input frequency

6. four times the input frequency
4 points
QUESTION 16
1. A step-up transformer will produce a secondary voltage that
is:
smaller than the primary
equal to the primary
larger than the primary
rectified.
4 points
QUESTION 17
1. What is the name of the circuit shown in the Figure 1 below?
Figure 1
half-wave rectifier
full-wave rectifier
bridge rectifier
voltage doubler
4 points
QUESTION 18

7. 1. Which region of the transistor is physically the largest?
collector
emitter
base
beta
4 points
QUESTION 19
1. Kirchhoff’s current law describes transistor currents as
follows:
emitter current equals the sum of collector and base currents.
collector current equals the sum of base and emitter currents.
base current equals the sum of collector and emitter currents.
emitter current equals collector current minus the base current.
4 points
QUESTION 20
1. Refer to Figure 2 below, what is the possible problem if VB
is equal to 0 V and VC is equal to 15 V?

8. Figure 2
transistor is shorted
RB is open
VCC is 0 V
transistor is blown open
4 points
QUESTION 21
1. Refer to Figure 2, what is the possible problem if VB is equal
to 15 V and VC is equal to 15 V?
Figure 2
transistor is blown open
VBB is 0 V
transistor is shorted
VCC is 0 V
4 points
QUESTION 22

9. 1. Using the load line shown in Figure 3, what is the transistor's
collector current if biased at the point labelled Q?
Figure 3
1.5 mA
3 mA
4.5 mA
7 mA
4 points
QUESTION 23
1. In the circuit shown in the Figure 4 below, calculate the
saturation current?
Figure 4

13. Path: p
Words:0
4 points
QUESTION 24
1. In the Common Collector (CC) circuit of Figure 5 below
consider β = 49 and VBE = 0.7 V.
Figure 5
Find the following:
A. IB
B. IE
C. VCE
D. VE
E. VB
F.

17. Path: p
Words:0
Audio Amplifier Project
The project is a design project using Multisim with the
requirements given below. The project is due on the last day of
the term.
Total Points: 100
Project name: Audio Amplifier (Multistage)
Audio Amplifier Power Output selection: 3.2 W, 5.6 W, 7.1 W,
8.4 W, 11.5 W, and 16.3 W
Audio Amplifier Input Voltage (peak) selection: 150mVpeak,
200mVpeak, 250mVpeak
Audio Frequency: 20 Hz – 20 KHz
Deliverable: Multisim design (soft copy), test results, short
report, and teamwork evaluation
Project Definition:
Design, simulate, and test an Audio Amplifier which delivers
one of the above power outputs to an 8Ω speaker load. The
output power of your design and the input signal of your design
must be selected from the above list. The audio frequency range
is between 20 Hz to 20 KHz, so the operating frequency of your

18. design will be within this range. The measuring equipment
should display the output power and the input signal of your
design. You are required to use either or both NPN and PNP
transistors, but not an op-amp. It is recommended that you use
multistage amplification of any class amplifiers of your choice.
You should try to minimize your usage of components and be
cost effective.
Project Structure:
In general, you will have one other classmate in your team.
Each of you will design and simulate an audio amplifier with
different specifications, each making your choice from the
above parameters. Thus, it is highly suggested that you
communicate with your partner as early as possible to plan and
coordinate your activities, select the input voltage and output
power for your design, and establish a schedule. For the testing
phase, you will develop a test plan and characterize and validate
your teammate’s amplifier.
During the project period, you are encouraged to communicate,
exchange ideas, and help each other complete your project. A
team area will be set up for you in Blackboard, and you are
required to use this area as part of your grade will be based on
effectively using this tool.
Project Deliverable: Report and the multisim design for your
project
Each student will submit an individual report. The report
should, as a minimum, include the following:
· Title Page (Name, Partners name, like the table they have in
the document)
· Description of your project (including the specifications you
selected)
· Design methodology (show calculations and provide rationale
for design choices; remember that your choices must take into
consideration commonly available parts)
· Final schematic in Multisim
· Components/Parts list with cost and total project cost
· Simulation results for your design

19. · Testing process and results for characterization and validation
of your teammate’s design – screenshots along will not suffice.
Description of process is required along with discussion of
results.
· Project Challenges: Note any difficulties you faced during the
completion of your design and how you overcame them
· Team Interaction Reflection: Describe how you used
Blackboard to facilitate interaction, how you worked with one
another in the design phase, challenges you encountered,
methods you employed to overcome any challenges.
· Teammate Assessment: Use the Project Participation Rubric
below and give your teammate a ranking of Needs Improvement,
Competent, or Excellent for the first two items in the rubric:
Interacts professionally and Plans and organizes team effort. Be
sure to justify your ranking.
· Conclusion
· References
Multistage Amplifier and its Application
Directions: Please answer the question and support your ideas.
In your own words, state the significance of a voltage amplifier
and its applications. Describe how negative feedback works, and
explain some of its advantages.
Should be 75-100 words.