1. | \(1\) and \(3\) both correspond to forward bias of junction. |
2. | \(3\) corresponds to forward bias of junction and \(1\) corresponds to reverse bias of junction. |
3. | \(1\) corresponds to forward bias and \(3\) corresponds to reverse bias of junction. |
4. | \(3\) and \(1\) both correspond to reverse bias of junction. |
1. | \(D_1\) is forward biased and \(D_2\) is revers-biased and hence current flows from \(A\) to \(B\). |
2. | \(D_2\) is forward biased and \(D_1\) is reverse-biased and hence no current flows from \(B\) to \(A\) and vice-versa. |
3. | \(D_1\) and \(D_2\) are both forward-biased and hence current flows from \(A\) to \(B\). |
4. | \(D_1\) and \(D_2\) are both reverse-biased and hence no current flows from \(A\) to \(B\) and vice-versa. |
1. | \(220~\text{V}\) | 2. | \(110~\text{V}\) |
3. | \(0~\text{V}\) | 4. | \(220\sqrt{2}~\text{V}\) |
Hole is:
1. | an anti-particle of electron. |
2. | a vacancy created when an electron leaves a covalent bond. |
3. | absence of free electrons. |
4. | an artificially created particle. |
The output of the given circuit in figure given below,
1. | would be zero at all times. |
2. | would be like a half wave rectifier with positive cycles in output. |
3. | would be like a half wave rectifier with negative cycles in output. |
4. | would be like that of a full wave rectifier. |
In the circuit shown in the figure given below, if the diode forward voltage drop is \(0.3~\text V,\) the voltage difference between \(A\) and \(B\) is:
1. | \(1.3~\text V\) | 2. | \(2.3~\text V\) |
3. | \(0\) | 4. | \(0.5~\text V\) |
(a) | electrons move from lower energy level to higher energy level in the conduction band. |
(b) | electrons move from higher energy level to lower energy level in the conduction band. |
(c) | holes in the valence band move from higher energy level to lower energy level. |
(d) | holes in the valence band move from lower energy level to higher energy level. |
Choose the correct option:
1. (a), (c)
2. (a), (d)
3. (b), (d)
4. (c), (d)
In the depletion region of a diode:
(a) | there are no mobile charges |
(b) | equal number of holes and electrons exist, making the region neutral |
(c) | recombination of holes and electrons has taken place |
(d) | immobile charged ions exist |
1. (a), (b)
2. (a), (b), (d)
3. (c), (d)
4. All options are correct
What happens during the regulation action of a Zener diode?
1. | the current and voltage across the Zener remain fixed. |
2. | the current through the series Resistance (Rs) changes. |
3. | the Zener resistance is constant. |
4. | the resistance offered by the Zener changes. |
Choose the correct option:
1. | (a, b) |
2. | (b, d) |
3. | (b, c) |
4. | (c, d) |