Question 1

When using an oscilloscope to verify the operation of a CE amplifier, you must remember to

Accepted Answer

A)  adjust the TIME/DIV setting on the oscilloscope when going from the amplifier input to the amplifier output. 
B)  adjust the VOLTS/DIV setting on the oscilloscope when going from the amplifier input to the amplifier output. 
C)  connect the external trigger of the oscilloscope to the circuit under test. 
D)  take all of the steps listed above. 
A)  adjust the TIME/DIV setting on the oscilloscope when going from the amplifier input to the amplifier output. 
B)  adjust the VOLTS/DIV setting on the oscilloscope when going from the amplifier input to the amplifier output. 
C)  connect the external trigger of the oscilloscope to the circuit under test. 
D)  take all of the steps listed above.

Question 2

Why is dc isolation between amplifier stages important?

Accepted Answer

A)  It allows an ac signal to be coupled from a source stage to a load stage. 
B)  It prevents the dc biasing of the source stage from affecting the dc biasing of the load stage. 
C)  It allows a dc signal to be coupled from a source stage to a load stage. 
A)  It allows an ac signal to be coupled from a source stage to a load stage. 
B)  It prevents the dc biasing of the source stage from affecting the dc biasing of the load stage. 
C)  It allows a dc signal to be coupled from a source stage to a load stage.

Question 3

The input and output signal voltages for a common-emitter amplifier are

Accepted Answer

A)  always 180° out of phase. 
B)  180° out of phase in all but one amplifier configuration. 
C)  in phase in all but one amplifier configuration. 
D)  always in phase. 
A)  always 180° out of phase. 
B)  180° out of phase in all but one amplifier configuration. 
C)  in phase in all but one amplifier configuration. 
D)  always in phase.

Question 4

The base input impedance of a BJT is listed on its spec sheet as

Accepted Answer

A)  hfe. 
B)  hre. 
C)  hie. 
D)  hoe. 
A)  hfe. 
B)  hre. 
C)  hie. 
D)  hoe.

Question 5

-The amplifier in Figure  has values of RC = 10 kΩ, rʹe = 25 Ω, and Ai = 15. What is the value of Ap for the circuit?

Accepted Answer

A)  375 
B)  6,000 
C)  400 
D)  Cannot be determined with the information given. 
A)  375 
B)  6,000 
C)  400 
D)  Cannot be determined with the information given.

Question 6

By design, the reactance of a coupling capacitor is extremely at the amplifierʹs lowest operating frequency.

Accepted Answer

A)  low 
B)  high 
A)  low 
B)  high

Question 7

By design, the reactance of a bypass capacitor is extremely at the amplifierʹs lowest operating frequency.

Accepted Answer

A)  low 
B)  high 
A)  low 
B)  high

Question 8

-Which of the following would indicate that the load in Figure has opened?

Accepted Answer

A)  An increase in the value of VE 
B)  An increase in the value of VC 
C)  An increase in the value of Av 
A)  An increase in the value of VE 
B)  An increase in the value of VC 
C)  An increase in the value of Av

Question 9

For circuit analysis purposes, the most commonly used h-parameters are

Accepted Answer

A)  hie and hoe. 
B)  hre and hfe. 
C)  hie and hre. 
D)  hfe and hie. 
A)  hie and hoe. 
B)  hre and hfe. 
C)  hie and hre. 
D)  hfe and hie.

Question 10

-What is the value of r`e?

Accepted Answer

A)  25 Ω 
B)  26 Ω 
C)  28 Ω 
D)  30 Ω 
A)  25 Ω 
B)  26 Ω 
C)  28 Ω 
D)  30 Ω

Question 11

- If a 10 kΩ load resistance is connected to the circuit, the voltage gain

Accepted Answer

A)  Increases. 
B)  Decreases. 
C)  Does not change significantly. 
A)  Increases. 
B)  Decreases. 
C)  Does not change significantly.

When using an oscilloscope to verify the operation of a CE amplifier, you must remember to

Why is dc isolation between amplifier stages important?

The input and output signal voltages for a common-emitter amplifier are

The base input impedance of a BJT is listed on its spec sheet as

-The amplifier in Figure has values of RC = 10 kΩ, rʹe = 25 Ω, and Ai = 15. What is the value of Ap for the circuit?

By design, the reactance of a coupling capacitor is extremely at the amplifierʹs lowest operating frequency.

By design, the reactance of a bypass capacitor is extremely at the amplifierʹs lowest operating frequency.

-Which of the following would indicate that the load in Figure has opened?

For circuit analysis purposes, the most commonly used h-parameters are

-What is the value of r`e?

- If a 10 kΩ load resistance is connected to the circuit, the voltage gain

Fundamental Solid-State Principles

Diodes

Common Diode Applications: Basic Power Supply Circuits

Common Diode Applications: Clippers, Clampers, Voltage Multipliers, and Displays

Special Applications Diodes

Bipolar Junction Transistors

DC Biasing Circuits

Introduction to Amplifiers

Other BJT Amplifiers

Power Amplifiers

Field-Effect Transistors

Mosfets

Amplifier Frequency Response

Operational Amplifiers

Additional Op-Amp Applications

Tuned Amplifiers

Oscillators

Solid-State Switching Circuits

Thyristors and Optoelectronics Devices

Discrete and Integrated Voltage Regulators

Filters

Exam 9: Common-Emitter Amplifiers

When using an oscilloscope to verify the operation of a CE amplifier, you must remember to

Why is dc isolation between amplifier stages important?

The input and output signal voltages for a common-emitter amplifier are

The base input impedance of a BJT is listed on its spec sheet as

-The amplifier in Figure has values of RC = 10 kΩ, rʹe = 25 Ω, and Ai = 15. What is the value of Ap for the circuit?

By design, the reactance of a coupling capacitor is extremely at the amplifierʹs lowest operating frequency.

By design, the reactance of a bypass capacitor is extremely at the amplifierʹs lowest operating frequency.

-Which of the following would indicate that the load in Figure has opened?

For circuit analysis purposes, the most commonly used h-parameters are

-What is the value of r`e?

- If a 10 kΩ load resistance is connected to the circuit, the voltage gain

Fundamental Solid-State Principles

Diodes

Common Diode Applications: Basic Power Supply Circuits

Common Diode Applications: Clippers, Clampers, Voltage Multipliers, and Displays

Special Applications Diodes

Bipolar Junction Transistors

DC Biasing Circuits

Introduction to Amplifiers

Other BJT Amplifiers

Power Amplifiers

Field-Effect Transistors

Mosfets

Amplifier Frequency Response

Operational Amplifiers

Additional Op-Amp Applications

Tuned Amplifiers

Oscillators

Solid-State Switching Circuits

Thyristors and Optoelectronics Devices

Discrete and Integrated Voltage Regulators

Filters