Electronics Devices

	Question
0	Name the important process that occurs during the formation of a p-n junction. Explain briefly with the help of suitable diagram, how a p-n junction is formed. Define the term 'barrier potential'. This question has 0 answers so far.
0	Explain the neat circuit diagram, the operation and characteristics of a JFET. Distinguish between n-channel and p-channel JFET. This question has 0 answers so far.
0	Explain the I-V characteristics of N channel enhancement mode MOSEFT and indicate the distinct regions of operation. This question has 0 answers so far.
0	Draw the hybrid model of a transistor and explain the significance of each component in the model. This question has 0 answers so far.
0	Draw and explain the input and output characteristics of a transistorin CB configuration. Indicate the cut off saturation and active region. This question has 0 answers so far.
0	Explain the working of a half wave rectifier. Also determine ripplefactor, efficiency and peak inverse voltage. This question has 0 answers so far.
0	Write short note on Schottky barrier diode. This question has 0 answers so far.
0	Write short note on LED. This question has 0 answers so far.
0	Why is Zener diode considered as a special purpose semiconductor diode? Draw the 1-V characteristics of Zener diode. Describe briefly with the help of a circuit diagram how a Zener diode works to obtain a constant DC voltage from the unregulated DC output of a rectifier. This question has 0 answers so far.
0	Describe the properties of Intrinsic and Extrinsic semi conductors. This question has 0 answers so far.
0	Show that the Fermi level of an intrinsic semiconductor lies much closed to the middle of the band gap. How does the intrinsic carrier density depend upon the band gap? This question has 0 answers so far.
0	Define diffusion capacitance. Derive an expression for the same. This question has 0 answers so far.
0	What are energy bands? How are these formed? Distinguish between a conductor, an insulator and a semiconductor on the basis of energy diagram. This question has 0 answers so far.
0	Define h-parameter and hence derive h-parameter model of a transistor in CE configuration. This question has 0 answers so far.
0	Why does Fermi level shift toward conduction or valence band with doping. This question has 0 answers so far.
0	Explain the working of negative clipper with its circuit diagram. This question has 0 answers so far.
0	-U S C and uxurinsic scul conductor What do you mean by thermal runaway of a transistor? Explain. This question has 0 answers so far.