Semiconductors

The logic gate equivalent to given logic gate is

The output of the logic circuit shown in figure will be

In the following combination of logic gates, the outputs (y,z) are respectively.

In case of semiconductors, the band gap between the valence band and conduction band is

The components which are used in regulated power supply as rectifier, filter and voltage regulator are

Below we give four entries for the truth table of two point input OR gate. Which two are wrong? $\begin{array}{cccc} & A & B & Y\\ \text{i} & 1 & 0 & 1\\ \text{ii} & 1 & 1 & 0\\ \text{iii} & 0 & 0 & 1\\ \text{iv} & 0 &…

The below truth table corresponds to ABY001101011110

Which of the following LED emits red and yellow light?

If the current gain in common-base configuration ($\alpha$) of a transistor increases from 0.95 to 0.96, the percentage change in current gain in common-emitter configuration ($\beta$) is approximately

Current through a reverse biased p-n junction, increases abruptly at

Identify the INCORRECT statement

A silicon crystal is doped with $5 \times 10^{17}\ \text{cm}^{-3}$ atoms of boron. The electron concentration $(n_e)$ at room temperature is $(n_i = 1.5 \times 10^{10}\ \text{cm}^{-3})$