Q. No.Following diagram performs the logic function of:
1. AND gate
2. NAND gate
3. OR gate
4. XOR gate
1. AND gate
2. NAND gate
3. OR gate
4. XOR gate
The barrier potential of a \(\mathrm{p\text-n}\) junction diode does not depend on:
1. diode design
2. temperature
3. forward bias
4. doping density
If a full-wave rectifier circuit is operating from \(50~\text{Hz}\) mains, the fundamental frequency in the ripple will be:
1. \(25~\text{Hz}\)
2. \(50~\text{Hz}\)
3. \(70.7~\text{Hz}\)
4. \(100~\text{Hz}\)
Reverse-bias applied to a junction diode:
| 1. | lowers the potential barrier |
| 2. | raises the potential barrier |
| 3. | increases the majority carrier current |
| 4. | increases the minority carrier's current |
The current \((I)\) in the circuit will be:
| 1. | \(\dfrac{5}{40}~\text{A}\) | 2. | \(\dfrac{5}{50}~\text{A}\) |
| 3. | \(\dfrac{5}{10}~\text{A} \) | 4. | \(\dfrac{5}{20}~\text{A}\) |
The following truth table represent which logic gate:
| A | B | C |
| 1 | 1 | 0 |
| 0 | 1 | 1 |
| 1 | 0 | 1 |
| 0 | 0 | 1 |
1. XOR
2. NOT
3. NAND
4. AND
For the given circuit of the \(\mathrm{p\text-n}\) 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 \(2V\). |
| A | B | Y |
| \(1\) | \(1\) | \(0\) |
| \(0\) | \(1\) | \(1\) |
| \(1\) | \(0\) | \(1\) |
| \(0\) | \(0\) | \(1\) |
2. XOR
3. NOR
4. OR
| 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. |
The electron concentration in an \(\mathrm{n\text-}\)type semiconductor is the same as the hole concentration in a \(\mathrm{p\text{-}}\)type semiconductor. An external field (electric) is applied across each of them. Compare the currents in them.
| 1. | current in \(\mathrm{n\text-}\)type \(>\) current in \(\mathrm{p\text{-}}\)type. |
| 2. | no current will flow in \(\mathrm{p\text{-}}\)type, current will only flow in \(\mathrm{n\text-}\)type. |
| 3. | current in \(\mathrm{n\text-}\)type \(=\) current in \(\mathrm{p\text{-}}\)type. |
| 4. | current in \(\mathrm{p\text{-}}\)type \(>\) current in \(\mathrm{n\text-}\)type. |
© 2024 GoodEd Technologies Pvt. Ltd.