questions for ece

1. Derive an expression for electrical conductivity on the basis of free electron theory

2. Derive an expression for density of states of electron in an atom.

3. show that energy spectrum of electrons in a solid consists of allowed and forbidden bands. distinguish between insulators, conductors and semiconductors on this basis.

4. Describe the motion of an electron in perpendicular electric and magnetic fields.

questions for cse

1. Discuss the theory of n channel FET

with drain and transfer characteristics.

2.Explain the two transistor analogy of

SCR and its working

3.Explain the construction and working

of nchannel E mosfet and D mosfet with

drain characteristics.

4.What are the advantages of UJT over BJT.

5. What are diode approximations (in detail)