Classical Thinking

Logic gates are the building blocks of a

A combination of $\mathrm{AND}$ function and $\mathrm{NOT}$ function results in

The figure represents a digital

An $\mathrm{OR}$ gate gives a logic $1$ output

 Truth table given below represents 

$\begin{array}{|ccc|}\hline \mathbf{A}& \mathbf{B}& \mathbf{Y}\\ 0& 0& 1\\ 0& 1& 0\\ 1& 0& 0\\ 1& 1& 0\\ \hline\end{array}$

 The following truth table is obtained for

$\begin{array}{|ccc|}\hline \mathbf{A}& \mathbf{B}& \mathbf{X}\\ 0& 0& 0\\ 1& 0& 0\\ 0& 1& 0\\ 1& 1& 1\\ \hline\end{array}$

In case of a semiconductor, which of the following statements is wrong?

For a transistor, the current amplification factor is $4$. When the transistor is connected in common emitter configuration, the change in collector current, when the base current changes by $6\mathrm{mA}$, is