Embibe Experts Solutions for Chapter: Semiconductor Devices and Communication Systems, Exercise 1: TS EAMCET - 5 August 2021 Shift 1

If the temperature of the semi-conductor is increased, which of the following is correct statement?

Two ammeters $A_1$ and $A_2$ are connected as shown in the given figure. By neglecting the internal resistance of the ammeters, the reading in the meter $A_1$ is

In a $p-n$ junction, an electric field of $5\times {10}^5 \mathrm{V} \mathrm{m}$ exists in the depletion region. The minimum kinetic energy of a conduction electron, in order to diffuse from $n$-side to the $p$-side, is found to be $3.2\times {10}^{-20} \mathrm{J}$. The width of the depletion region is,

A typical integrated circuit (IC) consisting of logic gates $\le 1000$ is termed as

What is output of the logic circuit shown below?

The height of transmitting antenna if TV programs have to cover the population in area of radius $64 \mathrm{km}$ is
[Use Radius of earth $=6.4\times {10}^6 \mathrm{m}$]

A message signal of frequency $f_m$ is used to modulate a carrier of frequency $f_c.$ If the side bands are $f_1$ and $f_2$ then the ratio $\frac{f_c}{f_m}$ is

A signal of, $20 \mathrm{kHz}$ is being carried on a carrier wave of $3 \mathrm{MHz}$. What are the side-band frequencies?