Q. No.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
1. XOR
2. NOT
3. NAND
4. AND
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. \(\frac{5}{20}~\text{A}\)
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 |
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. \(100~\text{Hz}\)
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
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 output of the OR gate is \(1\):
| 1. | if either or both inputs are \(1.\) |
| 2. | only if both inputs are \(1.\) |
| 3. | if either input is zero |
| 4. | if both inputs are zero |
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