Level 2

Which of the following does not give $p-$type properties to a semiconductor when used as a doping agent?

For the circuit shown below, calculate the value of $I_{\mathrm{z}}:$

A digital signal -

The following logic gate is equivalent to : 

Four NOR gates are connected as shown in figure. The truth table for the given figure is :

In the following logic circuit the sequence of the inputs $A, B$ are $(0,0),(0,1),(1,0)$ and $(1,1).$ The output $Y$ for this sequence will be :

A common emitter amplifier has a voltage gain of $50,$ an input impedance of $100 \mathrm{\Omega }$ and an output impedance of $200 \mathrm{\Omega }.$ The power gain out of the amplifier is

The energy band diagrams for three semiconductor samples of silicon are as shown. We can then assert that