KERALA UNIVERSITY Class 3 solid state devices Question Paper 2021

Practice authentic previous year questions for better exam preparation.

Sample Questions

Explain a semiconductor junction under equilibrium? Wral happens if a bias is applied across the junclion? Describe using energy band dagrams.
Explain the effect of forward bias and reverse bias on an ohmic conlact? 15 A $\mathrm{P}^{\prime} \mathrm{N}$ junction has an area of $10^{-2} \mathrm{~cm}^{2}$ and $\mathrm{N}_{v}=2 \times 10^{15} / \mathrm{cm}^{-3}$. Plot the junclion capacitance...
Explain the working of BJT as a switch?
Explain channel length modulation and velocity saturalion in MOSFETs?
Explain the principle of working of a UJT? With the help of an equivalent circuit derive the expression for the intrinsic stand-off ratio of the UJT. ( $6 \times 10=60$ Marks)