In the circuit shown in the figure, the input voltage Vi is 20 V, VBE = 0, and VCE = 0. The values of IB, Iand β are given by:
           

1. IB = 40 μA, Ic = 10 mA, β = 250

2. IB = 25 μA, Ic = 5 mA, β = 200

3. IB = 20 μA, Ic = 5 mA, β = 250

4. IB = 40 μA, Ic = 5 mA, β = 125

Subtopic:  Applications of Transistor (OLD NCERT) |
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From NCERT
NEET - 2018
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In a \(\mathrm{p\text{-}n}\) junction diode, the change in temperature due to heating:

1. affects only reverse resistance.
2. affects only forward bias.
3. does not affect the resistance of the \(\mathrm{p\text{-}n}\) junction.
4. affects the overall \(\mathrm{V\text{-}I}\) characteristics of a \(\mathrm{p\text{-}n}\) junction.

Subtopic:  PN junction |
 74%
From NCERT
NEET - 2018
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The given electrical network is equivalent to:
   
1. \(\mathrm{OR}\) gate
2. \(\mathrm{NOR}\) gate
3. \(\mathrm{NOT}\) gate
4. \(\mathrm{AND}\) gate

Subtopic:  Logic gates |
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From NCERT
NEET - 2017
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Which one of the following represents the forward bias diode?

1.  
2.  
3.
4.
Subtopic:  PN junction |
 80%
From NCERT
NEET - 2017
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What is the output \(Y\) in the following circuit, when all the three inputs \(A\), \(B\), and \(C\) are first \(0\) and then \(1\)
                          
1. \(0,1\)
2. \(0,0\)

3. \(1,0\)

4. \(1,1\)

Subtopic:  Logic gates |
 82%
From NCERT
NEET - 2016
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To get output \(Y=1\) for the following circuit, the correct choice for the input is:
  

1. \(A=1,~ B= 0, ~C=0\)
2. \(A=1,~ B= 1, ~C=0\)
3. \(A=1,~ B= 0, ~C=1\)
4. \(A=0,~ B= 1, ~C=0\)

Subtopic:  Logic gates |
 89%
From NCERT
NEET - 2016
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Consider the junction diode as an ideal. The value of current flowing through \(AB\) is: 
   
1. \(10^{-2}~\text{A}\)
2. \(10^{-1}~\text{A}\)
3. \(10^{-3}~\text{A}\)
4. \(0~\text{A}\)

Subtopic:  PN junction |
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From NCERT
NEET - 2016
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The input signal given to a CE amplifier having a voltage gain of 150 is Vi=2cos15t+π3. The corresponding output signal will be:

1. 30 cos 15t+π3

2. 75 cos 15t+2π3

3. 2 cos 15t+5π3

4. 300 cos 15t+4π3

Subtopic:  Applications of Transistor (OLD NCERT) |
 75%
From NCERT
NEET - 2015
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If in a \(\mathrm{p\text{-}n}\) junction, a square input signal of \(10~\text{V}\) is applied as shown, 

 
then the output across \(R_L\) will be:

1. 2.
3. 4.
Subtopic:  PN junction |
 72%
From NCERT
NEET - 2015
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Which logic gate is represented by the following combination of logic gates? 

    
1. \(\mathrm{OR}\)
2. \(\mathrm{NAND}\)
3. \(\mathrm{AND}\)
4. \(\mathrm{NOR}\)
Subtopic:  Logic gates |
 66%
From NCERT
NEET - 2015
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