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Q. No.The truth table for the given logic circuit is:
1.
\(A\)
\(B\)
\(C\)
\(0\)
\(0\)
\(0\)
\(0\)
\(1\)
\(1\)
\(1\)
\(0\)
\(0\)
\(1\)
\(1\)
\(1\)
2.
\(A\)
\(B\)
\(C\)
\(0\)
\(0\)
\(0\)
\(0\)
\(1\)
\(1\)
\(1\)
\(0\)
\(1\)
\(1\)
\(1\)
\(0\)
3.
\(A\)
\(B\)
\(C\)
\(0\)
\(0\)
\(1\)
\(0\)
\(1\)
\(0\)
\(1\)
\(0\)
\(0\)
\(1\)
\(1\)
\(1\)
4.
\(A\)
\(B\)
\(C\)
\(0\)
\(0\)
\(1\)
\(0\)
\(1\)
\(0\)
\(1\)
\(0\)
\(1\)
\(1\)
\(1\)
\(0\)
| \(A\) | \(B\) | \(C\) |
| \(0\) | \(0\) | \(0\) |
| \(0\) | \(1\) | \(1\) |
| \(1\) | \(0\) | \(0\) |
| \(1\) | \(1\) | \(1\) |
| \(A\) | \(B\) | \(C\) |
| \(0\) | \(0\) | \(0\) |
| \(0\) | \(1\) | \(1\) |
| \(1\) | \(0\) | \(1\) |
| \(1\) | \(1\) | \(0\) |
| \(A\) | \(B\) | \(C\) |
| \(0\) | \(0\) | \(1\) |
| \(0\) | \(1\) | \(0\) |
| \(1\) | \(0\) | \(0\) |
| \(1\) | \(1\) | \(1\) |
| \(A\) | \(B\) | \(C\) |
| \(0\) | \(0\) | \(1\) |
| \(0\) | \(1\) | \(0\) |
| \(1\) | \(0\) | \(1\) |
| \(1\) | \(1\) | \(0\) |
Subtopic: Logic gates |
62%
Level 2: 60%+
NEET - 2022
Hints
The output of the logic circuit shown is equivalent to a/an:
1. \(\text{OR}\) gate
2. \(\text{NOR}\) gate
3. \(\text{AND}\) gate
4. \(\text{NAND}\) gate
Subtopic: Logic gates |
73%
Level 2: 60%+
NEET - 2022
Hints
The circuit represents a full wave bridge rectifier when switch \(S\) is open. The output voltage \((V_0)\) pattern across \(R_L\) when \(S\) is closed:
| 1. |  |
2. |  |
| 3. |  |
4. |  |
Subtopic: Rectifier |
Level 3: 35%-60%
NEET - 2022
Hints
The incorrect statement about the property of a Zener diode is:
| 1. | Zener voltage remains constant at the breakdown. |
| 2. | It is designed to operate under reverse bias. |
| 3. | The depletion region formed is very wide. |
| 4. | \(\mathrm{p}\) and \(\mathrm{n}\) regions of the Zener diode are heavily doped. |
Subtopic: Applications of PN junction |
58%
Level 3: 35%-60%
NEET - 2022
Hints
Identify the equivalent logic gate represented by the circuit given below:
1. \(\text{OR}\)
2. \(\text{NOR}\)
3. \(\text{AND}\)
4. \(\text{NAND}\)
1. \(\text{OR}\)
2. \(\text{NOR}\)
3. \(\text{AND}\)
4. \(\text{NAND}\)
Subtopic: Logic gates |
64%
Level 2: 60%+
NEET - 2022
Hints
In the given circuits \((a),\) \((b),\) and \((c),\) the potential drop across the two \({\mathrm{p\text-n}}\) junctions is equal in:
| 1. | both circuits \((a)\) and \((c)\) |
| 2. | circuit \((a)\) only |
| 3. | circuit \((b)\) only |
| 4. | circuit \((c)\) only |
Subtopic: PN junction |
64%
Level 2: 60%+
NEET - 2022
Hints
As the temperature increases, the electrical resistance:
| 1. | decreases for conductors but increases for semiconductors. |
| 2. | increases for both conductors and semiconductors. |
| 3. | decreases for both conductors and semiconductors. |
| 4. | increases for conductors but decreases for semiconductors. |
Subtopic: Energy Band theory |
75%
Level 2: 60%+
NEET - 2022
Hints
In half-wave rectification, if the input frequency is \(60\) Hz, the output frequency will be:
| 1. | \(120\) Hz | 2. | zero |
| 3. | \(30\) Hz | 4. | \(60\) Hz |
Subtopic: Rectifier |
68%
Level 2: 60%+
NEET - 2022
Hints
In an unbiased \(\mathrm{p\text{-}n}\) junction, holes diffuse from the \(\mathrm{p\text{-}}\)regions to \(\mathrm{n\text{-}}\)regions because of:
| 1. | the attraction of free electrons of the \(\mathrm{n\text{-}}\)region. |
| 2. | the higher hole concentration in the \(\mathrm{p\text{-}}\)region than that in the \(\mathrm{n\text{-}}\)region. |
| 3. | the higher concentration of electrons is in the \(\mathrm{p\text{-}}\)region than that in the \(\mathrm{n\text{-}}\)region. |
| 4. | the potential difference across the \(\mathrm{p\text{-}n}\) junction. |
Subtopic: PN junction |
72%
Level 2: 60%+
NEET - 2013
Hints
A full wave rectifier circuit consists of two \(\mathrm{p\text-n}\) junction diodes, a centre-tapped transformer, capacitor and a load resistance. Which of these components remove the ac ripple from the rectified output?
1. load resistance
2. a centre-tapped transformer
3. \(\mathrm{p\text-n}\) junction diodes
4. capacitor
1. load resistance
2. a centre-tapped transformer
3. \(\mathrm{p\text-n}\) junction diodes
4. capacitor
Subtopic: Rectifier |
58%
Level 3: 35%-60%
NEET - 2023
Hints
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