The truth table for the following network is:
1. 


2. 


3. 


4.  None of the above 
Zener diode is used as:
1. Halfwave rectifier
2. Fullwave rectifier
3. AC voltage stabilizer
4. DC voltage stabilizer
The depletion layer has (for an unbiased \(\mathrm{p\textn}\) junction):
1. electrons
2. holes
3. static ions
4. neutral atoms
In semiconductors at room temperature:
1.  The valence band is completely filled and the conduction band is partially filled. 
2.  The valence band is completely filled. 
3.  The conduction band is completely empty. 
4.  The valence band is partially empty and the conduction band is partially filled. 
The peak voltage in the output of a halfwave diode rectifier fed with a sinusoidal signal without a filter is \(10\) V. The DC component of the output voltage is:
1. \(\frac{10}{\pi }\) V
2. \(10\) V
3. \(\frac{20}{\pi }\) V
4. \(\frac{10}{\sqrt{2}}\) V
In a p–n junction photocell, the value of the photo electromotive force produced by monochromatic light is proportional to:
1.  the intensity of the light falling on the cell. 
2.  the frequency of the light falling on the cell. 
3.  the voltage applied at the p–n junction. 
4.  the barrier voltage at the p–n junction. 
The output of the OR gate is \(1\):
1.  if either or both inputs are \(1.\) 
2.  only if both inputs are \(1.\) 
3.  if either input is zero 
4.  if both inputs are zero 
1.  High potential at the \(\mathrm{n}\) side and low potential at the \(\mathrm{p}\) side. 
2.  High potential at the \(\mathrm{p}\) side and low potential at the \(\mathrm{n}\) side. 
3.  \(\mathrm{p}\) and \(\mathrm{n}\) both are at the same potential. 
4.  Undetermined. 
A  B  Y 
\(1\)  \(1\)  \(0\) 
\(0\)  \(1\)  \(1\) 
\(1\)  \(0\)  \(1\) 
\(0\)  \(0\)  \(1\) 
For the given circuit of the \(\mathrm{p\textn}\) junction diode, which of the following statements is correct?
1.  In F.B. the voltage across \(R\) is \(V\). 
2.  In R.B. the voltage across \(R\) is \(V\). 
3.  In F.B. the voltage across \(R\) is \(2V\). 
4.  In R.B. the voltage across \(R\) is \(2V\). 