The following configuration of the logic gate is equivalent to

         

1.  NAND gate

2.  XOR gate

3.  OR gate

4.  NOR gate

 

Subtopic:  Logic gates |
 58%
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Three ideal diodes are connected to the battery as shown in the circuit. The current supplied by the battery is:

                         
1. zero
2. \(4~\text{A}\)
3. \(2~\text{A}\)
4. \(6~\text{A}\)

Subtopic:  PN junction |
 77%
From NCERT
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If a small amount of aluminium is added to the silicon crystal:

1. its resistance decreases.
2. it becomes a \(\mathrm{p\text-}\)type semiconductor.
3. there will be fewer free electrons than holes in the semiconductor.
4. All of these are correct.
Subtopic:  Types of Semiconductors |
 75%
From NCERT
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When a \(\mathrm{p\text-n}\) junction is forward biased, then:
1. the depletion region becomes thick.
2. the \(\mathrm{p}\text-\)side is at a higher potential than \(\mathrm{n\text-}\)side.
3. the current flowing is zero.
4. the effective resistance is of the order of \(10^6 ~\Omega\).
Subtopic:  PN junction |
 82%
From NCERT
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When a transistor is used as a switch it is in:

1.  Active state

2.  Cut off state

3.  Saturation state

4.  Both cut off state and saturation state are possible

Subtopic:  Applications of Transistor (OLD NCERT) |
 62%
From NCERT
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The current through an ideal p-n junction diode shown in the circuit will be:

                                       

1.  5 A
2.  0.2 A 
3.  0.6 A
4.  zero

Subtopic:  PN junction |
 60%
From NCERT
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In the given circuit power 
developed in 1 resistor is

     

1.  36 mW

2.  12 mW

3.  144 mW

4.  64 mW

 

Subtopic:  Applications of PN junction |
 64%
From NCERT
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The given electrical network is equivalent to 

1. AND gate 

2. OR gate

3. NOR gate

4. NOT gate 

Subtopic:  Logic gates |
 66%
From NCERT
NEET - 2017
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Which one of the following represents forward biased circuit?

1. 

2. 

3. 

4. 

Subtopic:  PN junction |
 84%
From NCERT
NEET - 2017
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What is the output Y in the following circuit, when all the three inputs A,B,C are first 0 and then 1 ?

              

1. 0,1

2. 0,0 

3. 1,0

4. 1,1

Subtopic:  Logic gates |
 78%
From NCERT
NEET - 2016
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