MC II: Lesson 1 - Basic Electronics For Motor Control Devices Flashcards
Two common semiconductor materials are ? and ? .
a.
aluminum / boron
b.
iron / gallium
c.
selenium / bismuth
d.
silicon / germanium
d.
silicon / germanium
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.
hole
A(n) ? exhibits characteristics of both insulators and conductors.
a.
element
b.
polymer
c.
semiconductor
d.
shield
c.
semiconductor
Adding impurities to a pure material is known as the ? process.
a.
contamination
b.
doping
c.
impurification
d.
rectification
b.
doping
A semiconductor material with an excess of free electrons is called a(n) ? material.
a.
N-type
b.
P-type
a.
N-type
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.
antimony / arsenic / bismuth
A semiconductor material with a deficiency of free electrons is called a(n) ? material.
a.
N-type
b.
P-type
b.
P-type
Adding gallium, boron, or indium to pure silicon or germanium will create a material with an excess of ? .
a.
electrons
b.
holes
b.
holes
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
b.
depletion
The P side of a PN junction diode is referred to as the ? .
a.
anode
b.
cathode
a.
anode
The N side of a PN junction diode is referred to as the ? .
a.
anode
b.
cathode
b.
cathode
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
b.
barrier
To conduct current, the semiconductor diode must be ? biased.
a.
forward
b.
reverse
a.
forward
Identify the anode and the cathode for a PN diode.
When a diode is properly biased to conduct, the depletion region will expand.
True
False
False
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.
negative / positive
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
c.
0.6 V
When the width of the depletion region changes, in essence the resistance of the PN junction changes.
True
False
True
Reverse bias on a diode will cause the depletion region to ? .
a.
collapse
b.
expand
b.
expand
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.
anode / cathode
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.
high / low
A diode is a semiconductor device that allows current to flow in only one direction.
True
False
True
The vertical line on the diode symbol, or the striped end of a diode, denotes the ? .
a.
anode
b.
cathode
b.
cathode
? 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.
Characteristic curves
