ECEN 370 study guide exam 2
questions and answers
Explain M-B statistics and for what type of particles it is appropriate. - ANS ✔Maxwell Boltzman
statistics is the distribution of energy states of atoms and molecules
Explain F-D statistics and for what type of particles it is appropriate - ANS ✔F-D statistics are
when electrons with half integer spin (fermions) and it is the profanity of fermions in a given
state at absolute 0 temp
Explain the concept of fermi energy and its significance at 0k and at higher temps - ANS ✔it is
the maximum energy of an electron at 0k
Explain how thermionic emission works and give an example of electronic device - ANS
✔thermionic emission is the process of electrons being emitted from a hot surface using the
work function energy ex cathode tubes or x-ray tubes, s, old tv
Formula F-d when temp above 0k - ANS ✔
explain how field emission work and give example of something that uses it - ANS ✔it is the
emission of electrons by electrostatic field with the barrier being thin enough to allow tunneling
ex electron microscopes
explain the concept of Schottky barrier lowering and give an example of electric device - ANS
✔schottky barrier lowering is when the barrier level value of a metal semiconductor is reduced
below its traditional value which improves electron flow ex diodes
questions and answers
Explain M-B statistics and for what type of particles it is appropriate. - ANS ✔Maxwell Boltzman
statistics is the distribution of energy states of atoms and molecules
Explain F-D statistics and for what type of particles it is appropriate - ANS ✔F-D statistics are
when electrons with half integer spin (fermions) and it is the profanity of fermions in a given
state at absolute 0 temp
Explain the concept of fermi energy and its significance at 0k and at higher temps - ANS ✔it is
the maximum energy of an electron at 0k
Explain how thermionic emission works and give an example of electronic device - ANS
✔thermionic emission is the process of electrons being emitted from a hot surface using the
work function energy ex cathode tubes or x-ray tubes, s, old tv
Formula F-d when temp above 0k - ANS ✔
explain how field emission work and give example of something that uses it - ANS ✔it is the
emission of electrons by electrostatic field with the barrier being thin enough to allow tunneling
ex electron microscopes
explain the concept of Schottky barrier lowering and give an example of electric device - ANS
✔schottky barrier lowering is when the barrier level value of a metal semiconductor is reduced
below its traditional value which improves electron flow ex diodes
