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JATC Year 3: Motor Control - Mid Term > MC II: Lesson 1 - Basic Electronics For Motor Control Devices > Flashcards

MC II: Lesson 1 - Basic Electronics For Motor Control Devices Flashcards

1
Q

Two common semiconductor materials are ? and ? .

a.
aluminum / boron

b.
iron / gallium

c.
selenium / bismuth

d.
silicon / germanium

A

d.
silicon / germanium

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2
Q

In an atom that has lost an electron, the place vacated by the free electron is referred to as a(n) ? .

a.
hole

b.
ion

c.
protron

d.
shell

A

a.
hole

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3
Q

A(n) ? exhibits characteristics of both insulators and conductors.

a.
element

b.
polymer

c.
semiconductor

d.
shield

A

c.
semiconductor

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4
Q

Adding impurities to a pure material is known as the ? process.

a.
contamination

b.
doping

c.
impurification

d.
rectification

A

b.
doping

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5
Q

A semiconductor material with an excess of free electrons is called a(n) ? material.

a.
N-type

b.
P-type

A

a.
N-type

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6
Q

Excess electrons can be added to intrinsic silicon or germanium by adding impurities such as ? , ? , and ? .

a.
antimony / arsenic / bismuth

b.
boron / gallium / indium

A

a.
antimony / arsenic / bismuth

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7
Q

A semiconductor material with a deficiency of free electrons is called a(n) ? material.

a.
N-type

b.
P-type

A

b.
P-type

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8
Q

Adding gallium, boron, or indium to pure silicon or germanium will create a material with an excess of ? .

a.
electrons

b.
holes

A

b.
holes

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9
Q

The area between the P-type materials and the N-type materials of a single junction PN diode is known as the ? region.

a.
contamination

b.
depletion

c.
doping

d.
rectification

A

b.
depletion

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10
Q

The P side of a PN junction diode is referred to as the ? .

a.
anode

b.
cathode

A

a.
anode

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11
Q

The N side of a PN junction diode is referred to as the ? .

a.
anode

b.
cathode

A

b.
cathode

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12
Q

The negative and positive ions in the depletion region of a silicon diode creates an interior ? voltage of approximately 0.6 volts.

a.
alternating

b.
barrier

c.
excitation

d.
pulsating

A

b.
barrier

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13
Q

To conduct current, the semiconductor diode must be ? biased.

a.
forward

b.
reverse

A

a.
forward

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14
Q

Identify the anode and the cathode for a PN diode.

A
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15
Q

When a diode is properly biased to conduct, the depletion region will expand.

True
False

A

False

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16
Q

A diode is forward biased when the cathode is connected to the ? side of the external voltage source and the anode is connected to the ? side.

a.
negative / positive

b.
positive / negative

A

a.
negative / positive

17
Q

When properly biased, a silicon diode will conduct when more than ? is applied.

a.
0.2 V

b.
0.4 V

c.
0.6 V

d.
0.8 V

A

c.
0.6 V

18
Q

When the width of the depletion region changes, in essence the resistance of the PN junction changes.

True
False

A

True

19
Q

Reverse bias on a diode will cause the depletion region to ? .

a.
collapse

b.
expand

A

b.
expand

20
Q

A diode is reversed biased when the ? is connected to the negative side of the external voltage source and the ? is connected to the positive side.

a.
anode / cathode

b.
cathode / anode

A

a.
anode / cathode

21
Q

A diode exhibits a ? resistance when it is reversed biased and a ? resistance when it is forward biased.

a.
high / low

b.
low / high

A

a.
high / low

22
Q

A diode is a semiconductor device that allows current to flow in only one direction.

True
False

A

True

23
Q

The vertical line on the diode symbol, or the striped end of a diode, denotes the ? .

a.
anode

b.
cathode

A

b.
cathode

24
Q

? are used to determine if a semiconductor device’s operational characteristics will be linear or non-linear over a range of voltage, current, or temperature values.

a.
Characteristic curves

b.
Field checks

c.
Shop drawings

d.
Tables

A

a.
Characteristic curves

25
Q

A graph of device terminal current versus terminal voltage that produces a straight line indicates that resistance is ? through the range of values for voltage and current.

a.
linear

b.
nonlinear

A

a.
linear

26
Q

Current can flow from anode to cathode in a diode if it is reversed biased and the ? voltage is reached.

a.
alternating

b.
barrier

c.
breakdown

d.
pulsating

A

c.
breakdown

27
Q

The maximum reverse bias voltage a diode can withstand is known as ? voltage.

a.
barrier

b.
breakdown

c.
depletion region

d.
peak inverse

A

d.
peak inverse

28
Q

Since diodes conduct current flow in only one direction, they are commonly used to convert an AC voltage to a(n) ? DC voltage.

a.
barrier

b.
breakdown

c.
excitation

d.
pulsating

A

d.
pulsating

29
Q

? is the process of converting an AC voltage to a DC voltage.

a.
Alternation

b.
Conversion

c.
Doping

d.
Rectification

A

d.
Rectification

30
Q

In a zener diode, the reverse breakdown voltage is referred to as ? voltage.

a.
barrier

b.
breakover

c.
peak inverse

d.
zener

A

d.
zener

31
Q

Zener diodes are designed to operate with a ? bias voltage.

a.
forward

b.
reverse

A

b.
reverse

32
Q

Identify the anode and the cathode for a zener diode.

A
33
Q

Zener voltage remains reasonably constant over a wide range of zener currents.

True
False

A

True

34
Q

The most common application for a zener diode is ? .

a.
amplification

b.
surge protection

c.
switching

d.
voltage regulation

A

d.
voltage regulation

35
Q

A photodiode operates with the external voltage source connected in a ? bias mode.

a.
forward

b.
reverse

A

b.
reverse

36
Q

A ? radiates energy at wavelengths of the visible light spectrum or in the infrared (non-visible) range when it is forward biased.

a.
light-emitting diode

b.
photodiode

c.
zener diode

A

a.
light-emitting diode

37
Q

A ? is a PN junction device which allows reverse current flow when light energy is focused on the P-type material.

a.
light-emitting diode

b.
photodiode

c.
zener diode

A

b.
photodiode

38
Q

Identify the semiconductor devices.

A

JATC Year 3: Motor Control - Mid Term (8 decks)

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