A Zener diode is shown in the following circuit diagram. When the source voltage fluctuates such that \(V>V_z\) then:
1. | \(I_1, I_2~\text{and}~I_3\) change. | all the current
2. | \(I_1\) and \(I_2\) change and \(I_3\) remains constant. | only
3. | \(I_1\) and \(I_3\) change and \(I_2\) remains constant. | only
4. | all the currents remain constant. |
The net charges on -type semiconductor and -type semiconductor are, respectively:
1. | Positive, negative | 2. | Negative, positive |
3. | Positive, positive | 4. | Zero, zero |
1. | Forward biasing | 2. | Reverse biasing |
3. | No biasing | 4. | All of these |
1. \(2\) A and zero
2. \(3\) A and \(2\) A
3. \(2\) A and \(3\) A
4. zero and \(2\) A
If in a reverse-biased \(\mathrm{p\text-n}\) junction, an increase in carrier concentration takes place due to the creation of new hole-electron pairs by the light of wavelength less than or equal to \(620\) nm, then the bandgap is:
1. \(1\) eV
2. \(2\) eV
3. \(20\) eV
4. \(0.2\) eV
1. | 2. | ||
3. | 4. |
1. | It requires a low operational voltage. |
2. | It has a fast on-off switching capability. |
3. | The bandwidth of the emitted light is \(100\) A to \(10000\) A. |
4. | It does not require warm-up time. |
A combination of logic gates is shown in the circuit. If \(A\) is at \(0\) V and \(B\) is at \(5\) V, then the potential of \(R\) is:
1. | \(0\) V | 2. | \(5\) V |
3. | \(10\) V | 4. | Any of these |
How many minimum number of NOR gates are required to obtain an AND gate?
1. One
2. Two
3. Three
4. Five
The circuit shown below is an electrical analogue for which of the following logic gates?
1. AND gate
2. OR gate
3. NOT gate
4. NOR gate