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Q. No.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
Subtopic: Rectifier |
53%
From NCERT
NEET - 2023
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Given below are two statements:
| Statement I: | Photovoltaic devices can convert optical radiation into electricity. |
| Statement II: | The Zener diode is designed to operate under reverse bias in the breakdown. |
| 1. | Statement I is incorrect but Statement II is correct. |
| 2. | Both Statement I and Statement II are correct. |
| 3. | Both Statement I and Statement II are incorrect. |
| 4. | Statement I is correct but Statement II is incorrect. |
Subtopic: Applications of PN junction |
75%
From NCERT
NEET - 2023
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For the following logic gate, the truth table is:
| 1. |
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| 2. |
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| 3. |
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| 4. |
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Subtopic: Logic gates |
67%
From NCERT
NEET - 2023
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Subtopic: Logic gates |
64%
From NCERT
NEET - 2023
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A \(\mathrm{p} \text-\)type extrinsic semiconductor is obtained when Germanium is doped with:
| 1. | antimony | 2. | phosphorous |
| 3. | arsenic | 4. | boron |
Subtopic: Types of Semiconductors |
74%
From NCERT
NEET - 2023
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The above figure shows the circuit symbol of a transistor. Select the correct statements given below:
| (A) | The transistor has two segments of p-type semiconductor separated by a segment of n-type semiconductor. |
| (B) | The emitter is of moderate size and heavily doped. |
| (C) | The central segment is thin and lightly doped. |
| (D) | The emitter base junction is reverse biased in common emitter amplifier circuit. |
| 1. | (C) and (D) |
| 2. | (A) and (D) |
| 3. | (A) and (B) |
| 4. | (B) and (C) |
Subtopic: Transistor (OLD NCERT) |
From NCERT
NEET - 2023
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The collector current in a common base amplifier using n-p-n transistor is \(24\) mA. If \(80\text{%}\) of the electrons released by the emitter are accepted by the collector, then the base current is numerically:
1. \(6\) mA and leaving the base.
2. \(3\) mA and leaving the base.
3. \(6\) mA and entering the base.
4. \(3\) mA and entering the base.
1. \(6\) mA and leaving the base.
2. \(3\) mA and leaving the base.
3. \(6\) mA and entering the base.
4. \(3\) mA and entering the base.
Subtopic: Applications of Transistor (OLD NCERT) |
From NCERT
NEET - 2022
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NEET 2025 - Target Batch
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NEET 2025 - Target Batch
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 |
61%
From NCERT
NEET - 2022
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NEET 2025 - Target Batch
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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 |
55%
From NCERT
NEET - 2022
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NEET 2025 - Target Batch
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NEET 2025 - Target Batch
The circuit represents a full wave bridge rectifier when switch \(S\) is open. The output voltage \((\text V_0)\) pattern across \(R_L\) when \(S\) is closed:
| 1. |  |
2. |  |
| 3. |  |
4. |  |
Subtopic: Rectifier |
From NCERT
NEET - 2022
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NEET 2025 - Target Batch
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