Following diagram performs the logic function of:
    
1. AND gate
2. NAND gate
3. OR gate
4. XOR gate

The \(V\text-I\) characteristic of a silicon diode is shown in the figure. The resistance of the diode at \(I_D = 15~\text{mA}\)$$ is: 

  
1. \(20~\Omega\)
2. \(30~\Omega\)
3. \(15~\Omega\)
4. \(10~\Omega\)

The barrier potential of a \(\mathrm{p\text-n}\) junction diode does not depend on:

Reverse bias applied to a junction diode:

For the given circuit of the \(\mathrm{p\text-n}\) junction diode, which of the following statements is correct?

The peak voltage in the output of a half-wave diode rectifier fed with a sinusoidal signal without a filter is \(10~\text V.\) The DC component of the output voltage is:
1. \(\dfrac{10}{\pi }~\text V\) 

2. \(10~\text V\) 

3. \(\dfrac{20}{\pi }~\text V\) 

4. \(\dfrac{10}{\sqrt{2}}~\text V\) 

In semiconductors at room temperature:

The truth table for the following network is:

Of the diodes shown in the following diagrams, which one of the diodes is reverse biased?
 

1.		2.
3.		4.