Consider the junction diode as an ideal. The value of current flowing through \(AB\) is: 
   
1. \(10^{-2}~\text{A}\)
2. \(10^{-1}~\text{A}\)
3. \(10^{-3}~\text{A}\)
4. \(0~\text{A}\)

In the given figure, a diode \(D\) is connected to an external resistance \(R = 100~\Omega\)$$ and an EMF of \(3.5~\text{V}\). If the barrier potential developed across the diode is \(0.5~\text{V}\), the current in the circuit will be:
  
1. \(30~\text{mA}\)
2. \(40~\text{mA}\)
3. \(20~\text{mA}\)
4. \(35~\text{mA}\)

The input signal given to a CE amplifier having a voltage gain of 150 is ${\mathrm{V}}_{\mathrm{i}}=2\cos \left[15\mathrm{t}+\frac{{\displaystyle \mathrm{\pi }}}{{\displaystyle 3}}\right]$. The corresponding output signal will be:

1. $30 \cos \left[15\mathrm{t}+\frac{\mathrm{\pi }}{3}\right]$

2. $75 \cos \left[15\mathrm{t}+\frac{2\mathrm{\pi }}{3}\right]$

3. $2 \cos \left[15\mathrm{t}+\frac{5\mathrm{\pi }}{3}\right]$

4. $300 \cos \left[15\mathrm{t}+\frac{4\mathrm{\pi }}{3}\right]$

If in a \(\mathrm{p\text{-}n}\) junction, a square input signal of \(10~\text{V}\) is applied as shown, 

 
then the output across \(R_L\) will be:

1.		2.
3.		4.

Which logic gate is represented by the following combination of logic gates? 

    

1. \(\mathrm{OR}\)
2. \(\mathrm{NAND}\)
3. \(\mathrm{AND}\)
4. \(\mathrm{NOR}\)

The given graph represents the \(\mathrm{V\text{-} I}\) characteristic for a semiconductor device.

Which of the following statement is correct?

The barrier potential of a \(\mathrm{p\text{-}n}\) junction depends on: 

Which one of the following is correct?
1. (a) and (b) only
2. (b) only
3. (b) and (c) only
4. (a), (b) and (c)