MATSE 201 Final Exam Questions With Answers
When a material acquires heat, it will gain kinetic energy in the form of quantized vibrations called _____________.
A) thermal shock
B) thermal conductivity
C) phonons
D) photons
C) phonons
The relationship between heat transferred to and abso...
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MATSE 201 Final Exam Questions With
Answers
When a material acquires heat, it will gain kinetic energy in the form of quantized vibrations called
_____________.
A) thermal shock
B) thermal conductivity
C) phonons
D) photons
C) phonons
The relationship between heat transferred to and absorbed by a substance is given by, Q=m•c•∆T.
Which of the following is a major assumption for that relationship?
A) No change in dimension over temperature range of ∆T
B) No phase change over temperature range of ∆T
C) No assumptions are made
D) No change in lattice vibrations over temperature range of ∆T
B) No phase change over temperature range of ∆T
Which of the following would NOT decrease thermal conduction?
A) Decreasing grain size
B) Increasing temperature
C) Adding dislocations
D) Decreasing bond strength
B) Increasing temperature
Which of the following would result in higher charge carrier mobility for a material?
A) Use single crystal
B) Increase temperature
C) Add dislocations
D) Increase impurities
A) Use single crystal
In intrinsic semiconductors, intrinsic conductivity rises exponentially with increasing temperature.
Which of the following explanations explains this rise?
A) An increase in ni
B) A decrease in mobility
C) Intrinsic conductivity does not rise with temperature
D) An increase in Eg
A) An increase in ni
The doping of boron into silicon would result in which of the following?
A) A p-type material
B) An increase in hole concentration
C) An extrinsic semiconductor
D) All of the above
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