The barrier potential of a p-n junction diode does not depend on:
1. diode design
2. temperature
3. forward bias
4. doping density
Following diagram performs the logic function of:
1. AND gate
2. NAND gate
3. OR gate
4. XOR gate
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. \(\frac{5}{40}~\text{A}\)
2. \(\frac{5}{50}~\text{A}\)
3. \(\frac{5}{10}~\text{A}
\)
4. \(\frac{5}{20}~\text{A}\)
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 P-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. |
The given truth table is for which logic gate:
A | B | Y |
\(1\) | \(1\) | \(0\) |
\(0\) | \(1\) | \(1\) |
\(1\) | \(0\) | \(1\) |
\(0\) | \(0\) | \(1\) |
1. NAND
2. XOR
3. NOR
4. OR
What is the correct statement regarding a p-n junction:
1. | high potential at the n side and low potential at the p side |
2. | high potential at the p side and low potential at the n side |
3. | p and 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. |