Q. No.The depletion layer has (for an unbiased \(p-n\) junction):
1. electrons
2. holes
3. static ions
4. neutral atoms
1. electrons
2. holes
3. static ions
4. neutral atoms
In semiconductors at room temperature:
| 1. | The valence band is completely filled and the conduction band is partially filled. |
| 2. | The valence band is completely filled. |
| 3. | The conduction band is completely empty. |
| 4. | The valence band is partially empty and the conduction band is partially filled. |
The peak voltage in the output of a half-wave diode rectifier fed with a sinusoidal signal without a filter is \(10\) V. The d. c. component of the output voltage is:
1. \(\frac{10}{\pi }\) V
2. \(10\) V
3. \(\frac{20}{\pi }\) V
4. \(\frac{10}{\sqrt{2}}\) V
In a p–n junction photocell, the value of the photo electromotive force produced by monochromatic light is proportional to:
| 1. | the intensity of the light falling on the cell. |
| 2. | the frequency of the light falling on the cell. |
| 3. | the voltage applied at the p–n junction. |
| 4. | the barrier voltage at the p–n junction. |
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 |
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 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
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 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
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. \(\frac{5}{20}~\text{A}\)
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