Embibe Experts Solutions for Chapter: Semiconductor Electronics: Materials, Devices and Simple Circuits, Exercise 1: Nagaland Board-2020

Draw the graph showing the variation of current with voltage for a p-n junction diode, when the diode is

$\left(\mathrm{i}\right)$ forward biased 

$\left(\mathrm{ii}\right)$ reverse biased

Identify the logic gates $\mathrm{X}$and $\mathrm{Y}$in the following figure. Write down the truth table for output $\mathrm{Z}$for all possible inputs $\mathrm{A}$and $\mathrm{B}$.

State the principle of working of p-n diode as a rectifier. With the help of circuit diagram, explain the use of $\mathrm{p}-\mathrm{n}$junction diodes as a full wave rectifier. Draw input and output wave forms.

Explain with the help of a labelled circuit diagram, how an $\mathrm{n}-\mathrm{p}-\mathrm{n}$ transistor can be used as an amplifier in common emitter configuration. Also, explain how input and output voltages are out of phase by$180°$ for a common emitter transistor amplifier.

In an $\mathrm{n}–$type silicon, which of the following statement is true?

Write the truth table of AND gate.

With the help of a circuit diagram, explain the input and output characteristics of a common emitter $\mathrm{n}-\mathrm{p}-\mathrm{n}$ transistor configuration. State the conclusions drawn from the characteristics curves.

What is a transistor? Explain with circuit diagram, the working of a transistor as an oscillator.