Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

AAS 2 > Solid State Devices > Flashcards

Solid State Devices Flashcards

(70 cards)

Start Studying
1
Q

This type of transistor bias consists of a resistor connected between the collector supply voltage and the base

A

Base current or fixed bias

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

A standard PN Junction diode has a ratio of one (1) impurity atom per 10 million semiconductor atoms. What type of diode commonly found in oscillators has a ratio of 1,000 impurity atoms to 10 million semiconductor atoms?

A

Tunnel Diode

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

A common collector amplifier has what type of output resistance?

A

Low

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What is the formula for finding current gain in a common base BJT?

A

(IC2-IC1)/(IE2-IE1)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What is the maximum number of electrons allowed in the 4th shell of an atom (Pauli’s Exclusion Principle.)?

A

32

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Which class of amplifier has the highest fidelity?

A

Class A

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

The greatest application of transistors is for use as what?

A

Amplifiers

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Diodes used to mix signals together or detect the presence of a signal are referred to as what?

A

Signal Diodes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

If the positive lead of a multimeter is connected to the “N” material and the negative lead to the “P” material of a PN junction diode, the depletion region will do what?

A

Increase

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What are the least number diodes needed for a full-wave rectifier?

A

2

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What solid state device is used to control both AC and DC power?

A

Thyristors

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Why is a full wave rectifier more efficient than a half wave rectifier?

A

It uses both halves of the AC sine wave

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Which statement best describes negative temperature coefficient?

A

As temperature goes up, resistance goes down

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Which energy band will you never find electrons residing in it?

A

Forbidden Band

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Which configuration of Bipolar Junction Transistor phase shifts the input signal 180 degrees at the output?

A

Common Emitter

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What solid state device consists of three terminal leads made of one emitter and two base leads?

A

Unijunction Transistor (UJT)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

What is the purpose of the base lead of a BJT?

A

Controls majority carriers

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Which of the following is a valuable property of a solid state device?

A

Durability

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

To forward bias a NPN Transistor

A

Base +, Emitter -; Collector +, Emitter -

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

What solid state device consists of three terminal leads made of a source a gate and a drain?

A

JFET

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

Which class amplifier allows current to flow for approximately 180 degrees of input signal?

A

Class B

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

What solid state device consists of four leads made of a source, a gate, a drain and a substrate?

A

MOSFET

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

The “P” material of an NPN BJT corresponds to which lead?

A

Base

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

Which solid state device incorporates an LED that shines through a window onto a photosensitive device?

A

Optocoupler

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Another name for the upper energy band of an atom is known as ?
The conductor band
26
What is the primary use for a Varactor diode?
communication circuits
27
Tunnel diodes have a "Negative Resistance Region." Within this region, as biasing voltage __________, current flow __________.
Increases, Decreases
28
Which class of amplifier has the highest efficiency?
Class C
29
What is the percentage of gain of an amplifier with input power of 1 W and output power of 5 W?
500%
30
As a ____________ diode is conducting current, there is a spot where current decreases as the voltage across the diode increases.
Tunnel
31
What is the approximate forward bias voltage of a Silicon diode?
600mV
32
When a small part of the amplifier signal begins to oscillate from the output and is sent back to the input, this is known as________?
Feedback
33
During the doping process, if an impurity increases the number of holes in semiconductor material, the impurity is known as?
P-Type Material
34
Current in a transistor is controlled by?
Varying the voltage
35
On a common emitter amplifier, the output is on the ________ .
Collector
36
What is the primary use for a Zener diode?
Voltage control
37
What component is used as a switch to turn on or off small or large amounts of power and performs this function with no moving parts?
SCR
38
Which class amplifier allows current to flow for less than one half cycle of input signal?
Class C
39
What is the approximate forward bias voltage of a Germanium diode?
300mV
40
This type of transistor bias is best for improving stability.
Combination bias
41
A common base amplifier has what type of output resistance?
High
42
What is another term used for a Schottky diode?
Hot carrier diode
43
DC voltages or currents that exist in a circuit before the application of a signal are referred to as what?
Quiescent state voltages/currents
44
During the doping process, if an impurity increases the number of free electrons in semiconductor material, the impurity is known as?
N-Type material
45
Beta (transistor gain) is a comparison of collector current with respect to _______________ current.
Base
46
On a common collector amplifier, the output is on the ______ .
Emitter
47
The greatest application of tunnel diodes is for use as?
Oscillators
48
Which statement best describes Positive Temperature coefficient?
As temperature goes up, resistance goes up
49
To forward bias a PNP Transistor
Base -, Emitter+; Collector -, Emitter +
50
If the power source to a diode is connected so the voltage aids the junction, it will increase the junction barrier and offer high **resistance** to current flow. This is known as____________.
Reverse Bias
51
What is the formula for finding current gain in a common collector BJT?
(IE2-IE1)/(IB2-IB1)
52
How many contacts are associated with a BJT transistor?
3
53
______________ is the process of sharing valence electrons, resulting in the formation of crystals.
Covalent bonding
54
Amplifiers for increasing ___________ have a small load resistance.
Current
55
What is the formula for finding current gain in a common emitter BJT?
(IC2-IC1)/(IB2-IB1)
56
In order to prevent damage during shipping, what safety device is normally attached to the leads of a MOSFET?
Shorting spring
57
What type of material does not have a forbidden energy band or a very small forbidden energy band?
Conductor
58
On a common base amplifier, the input is on the ________ .
Emitter
59
How much forward bias is typically required for a Germanium (Ge) diode to begin to conduct?
0.3V
60
In a JFET, when resistance decreases-
Current flow increases
61
Which solid state device is used to directly convert light into electrical energy?
Photovoltaic Cell
62
In a rectifier circuit, to provide the best filtering of AC ripple, a capacitor should have a _______________ _______________ time constant is required.
Long discharging
63
Which class amplifier allows current to flow through 360 degrees of input signal?
Class A
64
What is the waveform referred to on an oscilloscope resulting from a half wave rectifier?
Pulsating DC
65
A common emitter amplifier has what type of output resistance?
Medium
66
The material used to construct an LED determines the diode's what?
Color
67
What are transistors mostly used for in electronic circuits?
Switches
68
In a PN junction diode that is forward biased, as supply voltage increase what happens to current?
Increases
69
Which type of diode acts as a variable capacitor?
Varactor
70
What is the quiescent state of an amplifier?
The static operating (ready to work) point

AAS 2 (6 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions