Question 1

What is the total voltage gain of a three-stage amplifier that has stage gains of 17, 142, and 4?

Accepted Answer

A) 2414 
B) 28,968 
C) 9656 
D) 163 
A) 2414 
B) 28,968 
C) 9656 
D) 163

Question 2

An enhancement-type MOSFET can operate with a positive value of VGS.

Accepted Answer

A) True 
 B)False

Question 3

A current gain of almost one is a characteristic of a common-base amplifier.

Accepted Answer

A) True 
 B)False

Question 4

The most accurate signal reproduction in transistor amplifiers is provided by:

Accepted Answer

A) class A 
B) class B 
C) class C 
D) class AB 
A) class A 
B) class B 
C) class C 
D) class AB

Question 5

Oscillators are amplifiers that produce a repetitive waveform and that utilize:

Accepted Answer

A) degenerative feedback. 
B) positive feedback. 
C) negative feedback. 
D) both negative and positive feedback. 
A) degenerative feedback. 
B) positive feedback. 
C) negative feedback. 
D) both negative and positive feedback.

Question 6

Crossover distortion occurs in a ________ amplifier when the amplifier is biased at ________.

Accepted Answer

A) push-pull, cutoff 
B) common-emitter, saturation 
C) push-pull, saturation 
D) common-source, cutoff 
A) push-pull, cutoff 
B) common-emitter, saturation 
C) push-pull, saturation 
D) common-source, cutoff

Question 7

-In all N-channel FETʹs, the current into the source equals the current leaving the ________.

Accepted Answer

A) source 
B) drain 
C) emitter 
D) collector 
A) source 
B) drain 
C) emitter 
D) collector

Question 8

-To analyze the operation of a BJT in an amplifier circuit, use characteristic curves of:

Accepted Answer

A) base current versus collector to emitter voltage. 
B) emitter current versus emitter to collector voltage. 
C) collector current versus emitter to collector voltage. 
D) collector current versus collector to emitter voltage. 
A) base current versus collector to emitter voltage. 
B) emitter current versus emitter to collector voltage. 
C) collector current versus emitter to collector voltage. 
D) collector current versus collector to emitter voltage.

Question 9

-Which voltage would indicate that the amplifier in Figure  is operating in saturation?

Accepted Answer

A)    
B)    V 
C)    V 
D)    
A)    
B)    V 
C)    V 
D)

Question 10

-Which voltage would enable the circuit in Figure 17-4 to operate with little distortion?

Accepted Answer

A)    
B)    
C)    
D)    
A)    
B)    
C)    
D)

Question 11

-If the collector opens in Figure 17-4, the output voltage ________.

Accepted Answer

A) decreases to zero 
B) varies with temperature 
C) increases 
D) remains the same 
A) decreases to zero 
B) varies with temperature 
C) increases 
D) remains the same

Question 12

-The device in Figure 17-2 is a ________.

Accepted Answer

A) NPN type BJT 
B) P-channel MOSFET 
C) N-channel JFET 
D) depletion type MOSFET 
A) NPN type BJT 
B) P-channel MOSFET 
C) N-channel JFET 
D) depletion type MOSFET

Question 13

If a common-emitter amplifier measures the same voltage on the collector as VCC, the amplifier is 
operating in saturation.

Accepted Answer

A) True 
 B)False

Question 14

In a class A amplifier, the output signal is ________.

Accepted Answer

A) smaller in amplitude than the input 
B) the same shape as the input 
C) clipped 
D) distorted 
A) smaller in amplitude than the input 
B) the same shape as the input 
C) clipped 
D) distorted

Question 15

One advantage of the Darlington pair is ________.

Accepted Answer

A) increased overall beta 
B) less cost 
C) increased overall voltage gain 
D) decreasing the input impedance 
A) increased overall beta 
B) less cost 
C) increased overall voltage gain 
D) decreasing the input impedance

Question 16

To recognize transistor packages and identify the terminals, look for:

Accepted Answer

A) the flat side. 
B) the imprinted dot. 
C) the protruding tab. 
D) all of these. 
A) the flat side. 
B) the imprinted dot. 
C) the protruding tab. 
D) all of these.

Question 17

Although BJT transistors are current operated devices, a key characteristic is the signal voltage gain as an amplifier specified as:

Accepted Answer

A)    . 
B)    
C)    
D)    
A)    . 
B)    
C)    
D)

Question 18

A depletion-type MOSFET can operate with a positive or negative value of VGS.

Accepted Answer

A) True 
 B)False

Question 19

To correctly bias a BJT, reverse-bias the base-emitter junction and forward-bias the base-collector 
junction.

Accepted Answer

A) True 
 B)False

Question 20

-Beta (β) is the ratio of ________.

Accepted Answer

A) collector current to base current 
B) output voltage to input voltage 
C) emitter current to base current 
D) collector current to emitter current 
A) collector current to base current 
B) output voltage to input voltage 
C) emitter current to base current 
D) collector current to emitter current

Exam 17: RlC Circuits and Resonance

What is the total voltage gain of a three-stage amplifier that has stage gains of 17, 142, and 4?

An enhancement-type MOSFET can operate with a positive value of VGS.

A current gain of almost one is a characteristic of a common-base amplifier.

The most accurate signal reproduction in transistor amplifiers is provided by:

Oscillators are amplifiers that produce a repetitive waveform and that utilize:

Crossover distortion occurs in a ________ amplifier when the amplifier is biased at ________.

-In all N-channel FETʹs, the current into the source equals the current leaving the ________.

-To analyze the operation of a BJT in an amplifier circuit, use characteristic curves of:

-Which voltage would indicate that the amplifier in Figure is operating in saturation?

-Which voltage would enable the circuit in Figure 17-4 to operate with little distortion?

-If the collector opens in Figure 17-4, the output voltage ________.

-The device in Figure 17-2 is a ________.

If a common-emitter amplifier measures the same voltage on the collector as VCC, the amplifier is operating in saturation.

In a class A amplifier, the output signal is ________.

One advantage of the Darlington pair is ________.

To recognize transistor packages and identify the terminals, look for:

Although BJT transistors are current operated devices, a key characteristic is the signal voltage gain as an amplifier specified as:

A depletion-type MOSFET can operate with a positive or negative value of VGS.

To correctly bias a BJT, reverse-bias the base-emitter junction and forward-bias the base-collector junction.

-Beta (β) is the ratio of ________.

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

Capacitors

Inductors

Transformers

RC Circuits

RL Circuits

Passive Filters

Circuit Theorems in Ac Analysis

Time Response of Reactive Circuits

Three-Phase Systems in Power Applications

Filters

Crossover distortion occurs in a amplifier when the amplifier is biased at .