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 |
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From NCERT
NEET - 2015
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The output \((X)\) of the logic circuit shown in the figure will be: 
  
1. \(X= \overline{A\cdot B}\)
2. \(X = A\cdot B\)
3. \(X= \overline{A+ B}\)
4. \(X=\overline{\overline{A}} \cdot \overline{\overline{B}}\)

Subtopic:  Logic gates |
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From NCERT
AIPMT - 2013
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The output from a \(\mathrm{NAND}\) gate is divided into two in parallel and fed to another \(\mathrm{NAND}\) gate. The resulting gate is a:

 
1. \(\mathrm{AND}\) gate
2. \(\mathrm{NOR}\) gate
3. \(\mathrm{OR}\) gate
4. \(\mathrm{NOT}\) gate
Subtopic:  Logic gates |
 78%
From NCERT
NEET - 2013
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The figure shows a logic circuit with two inputs \(A\) and \(B\) and the output \(C\). The voltage waveforms across \(A\), \(B\), and \(C\) are as given. The logic circuit gate is:
   

1. \(\text{OR}\) gate
2. \(\text{NOR}\) gate
3. \(\text{AND}\) gate
4. \(\text{NAND}\) gate

Subtopic:  Logic gates |
 83%
From NCERT
AIPMT - 2012
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To get output \(Y = 1\) in the given circuit which of the following input will be correct?

 

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

Subtopic:  Logic gates |
 91%
From NCERT
AIPMT - 2012
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The symbolic representation of four gates is shown as: 
   
Pick out which ones are for AND, NAND, and NOT gates, respectively.

1.  (i), (iv), and (iii)

2.  (ii), (iii), and (iv)

3.  (ii), (iv), and (iii)

4.  (ii), (iv), and (i)

Subtopic:  Logic gates |
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From NCERT
AIPMT - 2011
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To get an output Y = 1 from the circuit shown below, the input must be:

 

1. A=0 B=1 C=0

2. A=0 B=0 C=1

3. A=1 B=0 C=1

4. A=1 B=0 C=0

Subtopic:  Logic gates |
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From NCERT
AIPMT - 2010
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The following figure shows a logic gate circuit with two inputs \(A\) and \(B\), and the output \(Y\). The voltage waveforms of \(A,B\) and \(Y\) are as given.
 

The logic gate is:
1. OR gate
2. AND gate
3. NAND gate
4. NOR gate

Subtopic:  Logic gates |
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From NCERT
AIPMT - 2010
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The symbolic representation of four logic gates is as shown:

(i) (ii)
(ii) (iv)



The logic symbols for OR, NOT, and NAND gates are respectively:
1. (iii), (iv), (ii)
2. (iv), (i), (iii)
3. (iv), (ii), (i)
4. (i), (iii), (iv)

Subtopic:  Logic gates |
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From NCERT
AIPMT - 2009
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The circuit is equivalent to: 
     

1. AND gate
2. NAND gate
3. NOR gate
4. OR gate

Subtopic:  Logic gates |
 75%
From NCERT
AIPMT - 2008
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