All Cards

Question 1

What are the three types of transistor amplifier configuration?

Answer 1

Common Base, Common Collector, Common Emitter

Question 2

Which amplifier has an input applied to the base circuit and an output taken from the emitter circuit?

Answer 2

Common-Collector Amplifierop j

Question 3

The collector of a PNP transistor has the most for __________ proper biasing.

Answer 3

Negative Potential Applied

Question 4

What voltage is VE?

Answer 4

Emitter To Ground

Question 5

(True or False) To properly bias a PNP transistor a positive potential is applied to the collector compared to the base.

Answer 5

False

Question 6

What does NIC NOB represent?

Answer 6

Never Input on the Collector, Never Output on the Base

Question 7

In a common-emitter amplifier, output is taken from the _______________ circuit.

Answer 7

Collector

Question 8

What type of voltage is VEE?

Answer 8

Emitter Circuit Supply Voltage

Question 9

What component has 95-98 percent of total current flowing through it?

Answer 9

Collector

Question 10

The CE amplifier configuration has the input applied to____________.

Answer 10

The base

Question 11

What double subscript notation represents a Collector-to-Emitter voltage?

Answer 11

VCE

Question 12

What does RC represent?

Answer 12

Collector resistor, RL, Collector Load Resistor

Question 13

Which of the following represents a Collector Circuit Supply Voltage?

Answer 13

VCC

Question 14

Voltage from the Collector to Ground is represented by_________?

Answer 14

VC

Question 15

In a C-E transistor, what is used to represent current gain?

Answer 15

B Beta

Question 16

What lead is identified by a wide space between it and the base lead in an oval-shaped transistor?

Answer 16

Coolector

Question 17

What lead is connected to the mounting surface in a conventional power transistor?

Answer 17

Collector

Question 18

What are replaced with arrowheads on a schematic too indicate a connection too applicable sources?

Answer 18

Batteries

Question 19

A tab on the case of a round transistor is located closest to the ____________ lead.

Answer 19

Emitter

Question 20

What color is the dot that indicates the collector on a round transistor with the leads in line?

Answer 20

Red

Question 21

(True or False) On an oval-shaped transistor, the emitter lead is the farthest from the collector.

Answer 21

True

Question 22

On a rectangular-type conventional power transistor, the collector is connected to the _________ for the purpose of _________.

Answer 22

Case, Heat Dissipation

Question 23

On an oval-shaped transistor, the ________ lead is the farthest from the collector.

Answer 23

Emitter

Question 24

What is the most commonly used transistor amplifier?

Answer 24

Common Emitter (CE)

Question 25

Common-Collector amplifiers have the highest ___________ gain of the three transistor configurations.

Answer 25

Current

Question 26

What color sleeving indicates the Base of a round-type conventional power transistor?

Answer 26

Green

Question 27

On a round transistor with leads in line, a red dot indicates the ________.

Answer 27

Collector

Question 28

Which transistor amplifier provides the best power gain (Ap)?

Answer 28

Common Emitter

Question 29

What measures the sensitivity of an amplifier's reference values when subjected to changes in temperature?

Answer 29

Stability Factor

Question 30

Which amplifier configuration has the best overall stability?

Answer 30

Common Collector

Question 31

To obtain a desired DC operating point and retain that operating point under actual operating conditions is _________.

Answer 31

Biasing

Question 32

Which class of amplifier has the best efficiency?

Answer 32

Class C

Question 33

During AB operation, the output current flows for how many degrees?

Answer 33

More than 180, but Less than 360

Question 34

The worst stability factor is ________.

Answer 34

B+1

Question 35

Stability is the ability of amplifier to maintain its nominal DC reference values when subjected too changes in what?

Answer 35

Temperature, Environment, Current, or Time

Question 36

An amplifiers stability and gain are _______.

Answer 36

Inverse

Question 38

Which class of amplifier has the best fidelity?

Answer 38

Class A

Question 39

What minority current flows in any-reversed-biased PN junction during amplifier biasing?

Answer 39

ICO or ICBO

Question 40

Cutoff occurs when the ___________ junction is reversed-biased.

Answer 40

E-B

Question 41

Constant Emitter-Current biasing is also referred to as_____________.

Answer 41

Self Bias or Automatic Biasing

Question 42

During amplifier biasing, what is defined as the ability of an amplifier to maintain its nominal DC reference values when subjected to changes in temperature, environment, current, or time?

Answer 42

Stability

Question 43

What is the measure, of the sensitivity of an amplifiers reference values, to changes in temperature known as?

Answer 43

Stability Factor

Question 44

What are the three factors that cause DC reference values to shift: characteristics of semiconductor materials, and variations in _______.

Answer 44

Supply Voltages

Question 45

During amplifier biasing, ICO or ICBO is the same __________ current that flows in any reversed-biased PN junction.

Answer 45

Minority

Question 46

Which junction in amplifier biasing has a negative temperature coefficient?

Answer 46

E-B_B

Question 47

Which amplifier configuration has both AC and DC feedback?

Answer 47

C-C

Question 48

Stability is the ability of an amplifier to maintain its nominal DC reference values when subjected to changes in temperature, environment, current, or __________.

Answer 48

Time

Question 49

A bel is used to express the __________ ratio between the input and output of any given component, circuit, or system.

Answer 49

Logarithmic

Question 50

A __________ is the whole number part of the log.

Answer 50

Characteristic

Question 51

What is the log of 0.279?

Answer 51

-0.5543

Question 52

Calculate the dvmv level for an audio signal of 60 mV.

Answer 52

35.56 dBmV

Question 53

What is the BW, given f2 of 45kHz and f1 of 5kHz?

Answer 53

40kHz

Question 54

Capacitive reactance is __________ when frequency is high.

Answer 54

Low

Question 55

There are many types of amplifiers, but all are classified either by their _________ or frequency response.

Answer 55

Function

Question 56

In impedance considerations, how many circuits are coupled when they share a common element?

Answer 56

Two

Question 57

Gain of an amplifier our losses in transmission lines are often expressed in?

Answer 57

dB

Question 58

A __________ is the exponent that indicates the power to which a base number is raised to produce a given number.

Answer 58

Logarithm

Question 59

What is the antilog of -1.3201?

Answer 59

0.0478

Question 60

What is the dB loss for a decrease in voltage from 26V to 13V?

Answer 60

-6 dB

Question 61

As frequency decreases, capacitive reactance ____________ and inductive reactance ___________.

Answer 61

Decreases, Increases

Question 62

A ___________ is a unit that expresses the logarithmic ratio between the input and output of any given component, circuit, or system.

Answer 62

Bel

Question 63

What is the dB gain for an icrease in power from 17W to 52.7W?

Answer 63

4.914 dB

Question 64

Calculate the dBm level for a 27.6 mW audio signal.

Answer 64

14.4 dBm

Question 65

Which type of amplifier requires more components than AF and RF amplifiers?

Answer 65

Wideband Amplifier

Question 66

Placing a capacitor across across the windings of the coupling tuned-transformer provides _________.

Answer 66

Better Selectivity

Question 67

Direct coupling provides the _________.

Answer 67

Broadest frequency response of all coupling methods

Question 68

Which type of amplifier is used as the final stage of amplification to drive an output device?

Answer 68

DC

Question 69

The most costly and space consuming method of coupling amplifiers is ____________.

Answer 69

Transformer Coupling

Question 70

What is the most widely used form of coupling?

Answer 70

RC

Question 71

In ____________ the output device may be a speaker, antenna, or indicator device.

Answer 71

Power Amplifiers

Question 72

In special direct-coupled amplifiers, what term describes the use of NPN and PNP transistors in the same functional amplifier?

Answer 72

Complementary

Question 73

Feedback is the process of __________ a portion of the output signal back the input signal of an amplifier for control.

Answer 73

Coupling

Question 74

In a closed-loop system, what represents the summation point, where two or more voltages combine?

Answer 74

Sigma

Question 75

AF amplifiers perform uniform amplification of all signals within frequencies that fall within an AF range of _________ to _________?

Answer 75

20Hz to 20kHz

Question 76

Power transfer __________ when the impedances of input and output stages are mismatched.

Answer 76

Decreases

Question 77

Which amplifier coupling method acts like a single high power transistor?

Answer 77

Darlington Pair

Question 78

What feedback system has no feedback between input and output?

Answer 78

Open-Loop

Question 79

Ina closed loop system, __________ equals overall gain f amplifier with feedback.

Answer 79

Feedback Gain (Af)

Question 80

Which single-ended audio amplifier configuration is used because of its good voltage, power gain, and ease of obtaining negative feedback?

Answer 80

Common Emitter

Question 81

What is a primary characteristic of an open loop system?

Answer 81

No feedback output fed to the input

Question 82

Which class of feedback improves the stability of an amplifier but reduces its gain?

Answer 82

Degenerative

Question 83

A feedback signal that aids the input signal is _________.

Answer 83

Regenerative

Question 84

What is the basic voltage gain formula for an open loop system?

Answer 84

Vout/Vin

Question 85

What is a disadvantage to operating a push-pull amplifier in Class B?

Answer 85

Crossover Distortion

Question 86

What type of circuit generates alternating current at a frequency determined by the values of its components and at constant peak amplitude?

Answer 86

Oscillator

Question 87

Which oscillator component sustains oscillations?

Answer 87

Regenerative Feedback Network

Question 88

What are the three basic parts of an oscillator?

Answer 88

Frequency Determining Network, Positive Feedback Network, Amplifier

Question 89

In what type of oscillator does DC current flow through the resonant tank circuit?

Answer 89

Series Fed

Question 90

Which component is referred to as the heart of the oscillator?

Answer 90

Frequency Determining Network

Question 91

____________________ is the ability of an oscillator to maintain a constant amplitude output waveform.

Answer 91

Stability

Question 92

What category does an Armstrong oscillator fall under?

Answer 92

Sinusoidal

Question 93

Which oscillator is characterized by split capacitors in the frequency determining network?

Answer 93

Colpitts

Question 94

In an oscillator, which amplifier configuration has the highest power gain?

Answer 94

Common Emitter

Question 95

Oscillator categories are determined according to their output ___________.

Answer 95

Waveforms

Question 96

Which components identify the circuit as a Colpitts oscillator?

Answer 96

C1 & C2

Question 97

The ___________ amplifier configuration is best for the impedance matching.

Answer 97

C-C

Question 98

Which type of oscillator generates complex waveforms?

Answer 98

Non Sinusoidal

Question 99

An oscillator in which the DC current flows through the resonant tank circuit is known as what?

Answer 99

Series Fed