Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Fermi Dirac level:
Sol. The Fermi level is simply a reference energy level. It is the energy level at which the probability of finding an electron n energy unit above it in the conduction band is equal to the probability of finding a hole n energy units below it in the valence band. Very simply, it can be considered to the average energy level of the electrons, as illustrated in fig. (a). For simplification let us assume that (i) widths of energy bands are small in comparison to forbidden energy gap between them (ii) all levels in a band have the same energy, bandwidths being assumed to be small (iii) energies of all levels in valence band are E0, as shown in fig. (a) and (iv) energies of all levels in conduction band are EG. Let the zero energy reference level be taken arbitrarily at the top of the valence band, as shown in fig. (b). Now number of electrons in conduction band, where P represents the probability of an electron having energy EG. Its value may be determined from Fermi Dirac probability distribution function given as where P (E) is the probability of finding an electron having any particular value of energy E.
Q. Show Advantages of Oscillators? Although oscillations can be produced by mechanical devices (e.g. alternators), but electronic oscillators have the following advantages:
Explain the suitability of aluminium that is used as electrical conducting materials. Aluminium : Conductors are appropriate for ambient and very high temperature. Use of alu
Q. Write short note on Common vs. associated channel signalling. Associated vs. Common channel signalling: Out band signalling suffers from very limited bandwidth. Both a
Design the Synchronous Sequential Circuit for State Diagram Illustration: - We wish to design the synchronous sequential circuit whose state diagram The kind of flip-f
The rectangular pulse train of Figure (a) consists of pulses of height A and duration D. Such pulse trains are employed for timing purposes and to represent digital information. Fo
For a given logic family, consider VOL = 0.25V and VOH = 5 V . For a given circuit, VIL = 0.96 V and VIH = 2.18 V. Find the largest positive-going and largest negative-going nois
ABCD propagation of an optical ray through a system can be explained by a simple 2_2 matrix. In ray optics, the characteristic of a system is given by the corresponding ray matrix
A 3 phase 400 volt(line to line) wye connected synchronous motor has Xs= 1 ohm per phase and a negligible armature resistance. The field current is so adjusted that the internal(in
i want circuit theory relavant assingment sir please immediately
electrostatics focusing arrangement of cro
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd