MAT E 273 Exam Questions and Correct Answers (100%
COMPLETE ANSWERS) ALREADY GRADED A+ | 100%
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The __________________ is the first energy band of electron energy states that is completely empty for
a material in an unperturbed state at 0 Kelvin. - ANSWER-Conduction Band
The ___________________ is an energy range between electron energy bands over which no electron
energy states are available. - ANSWER-Band Gap
The energy difference between energy states within the electron energy bands of condensed matter is
approximately - ANSWER-10^-23 eV
When a semiconductor is exposed to a light source, its intrinsic concentration will increase if the
___________ of the light is ______________ than the band gap of the semiconductor. - ANSWER-
Energy, Greater
When a single-crystal silicon is exposed to a beam of strictly white visible light, ___________________
of the visible light wavelengths are expected to be transmitted (refracted) through the silicon (ignoring
reflection effects) - ANSWER-None
When single-crystal aluminum oxide is exposed to a beam of white visible light, ____________ of the
visible light wavelengths are expected to be transmitted (refracted) through the alumina (ignoring
reflection effects) - ANSWER-All
Which material category is generally associated with an electron band structure comprised of a partially
filled valance band at 0 Kelvin and otherwise unperturbed - ANSWER-Metal
A room-temperature free electron concentration of approximately 10^29 1/m^3 is a value consistent
with that of __________________. - ANSWER-A Typical Metal
A room-temperature free electron concentration of approximately 10^16 1/m^3 is a value consistent
with that of _________________________. - ANSWER-Undoped Silicon
, Identify the type of dopant species each element acts as when added to pure Germanium.
Boron - ANSWER-p-type
Identify the type of dopant species each element acts as when added to pure Germanium.
Arsenic - ANSWER-n-type
Identify the type of dopant species each element acts as when added to pure Germanium.
Indium - ANSWER-p-type
Identify the type of dopant species each element acts as when added to pure Germanium.
Phosphorus - ANSWER-n-type
Identify the type of dopant species each element acts as when added to pure Germanium.
Silicon - ANSWER-Neutral
Identify the type of dopant species each element acts as when added to pure Germanium.
Gallium - ANSWER-p-type
Identify the type of dopant species each element acts as when added to pure Germanium.
Carbon - ANSWER-Neutral
Which of the following is not a common metal/alloy for biomedical implants that are load-bearing?
COMPLETE ANSWERS) ALREADY GRADED A+ | 100%
satisfaction guaranteed
The __________________ is the first energy band of electron energy states that is completely empty for
a material in an unperturbed state at 0 Kelvin. - ANSWER-Conduction Band
The ___________________ is an energy range between electron energy bands over which no electron
energy states are available. - ANSWER-Band Gap
The energy difference between energy states within the electron energy bands of condensed matter is
approximately - ANSWER-10^-23 eV
When a semiconductor is exposed to a light source, its intrinsic concentration will increase if the
___________ of the light is ______________ than the band gap of the semiconductor. - ANSWER-
Energy, Greater
When a single-crystal silicon is exposed to a beam of strictly white visible light, ___________________
of the visible light wavelengths are expected to be transmitted (refracted) through the silicon (ignoring
reflection effects) - ANSWER-None
When single-crystal aluminum oxide is exposed to a beam of white visible light, ____________ of the
visible light wavelengths are expected to be transmitted (refracted) through the alumina (ignoring
reflection effects) - ANSWER-All
Which material category is generally associated with an electron band structure comprised of a partially
filled valance band at 0 Kelvin and otherwise unperturbed - ANSWER-Metal
A room-temperature free electron concentration of approximately 10^29 1/m^3 is a value consistent
with that of __________________. - ANSWER-A Typical Metal
A room-temperature free electron concentration of approximately 10^16 1/m^3 is a value consistent
with that of _________________________. - ANSWER-Undoped Silicon
, Identify the type of dopant species each element acts as when added to pure Germanium.
Boron - ANSWER-p-type
Identify the type of dopant species each element acts as when added to pure Germanium.
Arsenic - ANSWER-n-type
Identify the type of dopant species each element acts as when added to pure Germanium.
Indium - ANSWER-p-type
Identify the type of dopant species each element acts as when added to pure Germanium.
Phosphorus - ANSWER-n-type
Identify the type of dopant species each element acts as when added to pure Germanium.
Silicon - ANSWER-Neutral
Identify the type of dopant species each element acts as when added to pure Germanium.
Gallium - ANSWER-p-type
Identify the type of dopant species each element acts as when added to pure Germanium.
Carbon - ANSWER-Neutral
Which of the following is not a common metal/alloy for biomedical implants that are load-bearing?
