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Q. No.Which of the diode circuit shows correct biasing used for the measurement of dynamic resistance of p-n junction diode –
1.
2.
3.
4.
Subtopic: PN junction |
83%
Level 1: 80%+
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The output \({Y}\) of following circuit for given inputs is:
1. \({A.B(A+B)} \)
2. \({A.B}\)
3. \(0\)
4. \({\overline{A}.B}\)
1. \({A.B(A+B)} \)
2. \({A.B}\)
3. \(0\)
4. \({\overline{A}.B}\)
Subtopic: Logic gates |
67%
Level 2: 60%+
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Subtopic: Logic gates |
72%
Level 2: 60%+
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The I-V characteristics of an electronic device shown in the figure. The device is:
1. a transistor which can be used as an amplifier
2. a solar cell
3. a zener diode which can be used as a voltage regulator
4. a diode which can be used as a rectifier
Subtopic: Applications of PN junction |
89%
Level 1: 80%+
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| A | B | E |
| 0 | 0 | 0 |
| 0 | 1 | X |
| 1 | 0 | Y |
| 1 | 1 | 0 |
In the truth table of the above circuit the value of X and Y are:
1. 1, 1
2. 0, 1
3. 0, 0
4. 1, 0Subtopic: Logic gates |
77%
Level 2: 60%+
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A light emitting diode (LED) is fabricated using GaAs semiconducting material whose band gap is \(1.42\) eV. The wavelength of light emitted from the LED is :
1. \(875\) nm
2. \(1400\) nm
3. \(1243\) nm
4. \(650\) nm
1. \(875\) nm
2. \(1400\) nm
3. \(1243\) nm
4. \(650\) nm
Subtopic: Applications of PN junction |
84%
Level 1: 80%+
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The acceptor level of a p-type semiconductor is \(6\) eV. The maximum wavelength of light which can create a hole would be : Given \(h c=1242\) eV-nm.
1. \(407\) nm
2. \(207\) nm
3. \(103.5\) nm
4. \(414\) nm
Subtopic: Energy Band theory |
91%
Level 1: 80%+
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Subtopic: Logic gates |
81%
Level 1: 80%+
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Which of the following circuits represents a forward biased diode?
Choose the correct answer from the options given below:
1. (B), (C) and (E) only
2. (C) and (E) only
3. (B), (D) and (E) only
4. (A) and (D) only
Choose the correct answer from the options given below:
1. (B), (C) and (E) only
2. (C) and (E) only
3. (B), (D) and (E) only
4. (A) and (D) only
Subtopic: PN junction |
88%
Level 1: 80%+
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For the circuit shown above, equivalent GATE is:
| 1. | AND gate |
| 2. | NOT gate |
| 3. | NAND gate |
| 4. | OR gate |
Subtopic: Logic gates |
69%
Level 2: 60%+
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