# 08 - Advanced Logic Circuit MCQs

1. A single transistor can be used to build which of the following digital logic gates?
```Note:A transistor can be used as a switch. That is, when the base
is low, the collector is high (input zero, output one) and when the
base is high, the collector is low (input 1, output 0).```

OR gates

NOT gates

AND gates

NAND gates

2. The following waveform pattern is for a(n) ________. C

A

D

B

3. The circuit of the given figure realizes the function A

B

C

D

4. Derive the Boolean expression for the logic circuit shown below: A

C

B

D

5. In an expression containing both AND and OR operations, the AND operations are performed first.

FALSE

TRUE

6. The inputs to an AND gate are: A = 1, B = 0, C = 1. The output will be LOW.

FALSE

TRUE

7. A NAND gate consists of an AND gate and an OR gate connected in series with each other.

TRUE

FALSE

8. The NAND gate is an example of combinational logic.

FALSE

TRUE

9. NOR gates can be used to construct AND gates.

FALSE

TRUE

10. Which of the following logic expressions represents the logic diagram shown? A

B

C

D

11. Match the logic diagram to the equation.
```Option 1
=========
_   _
Q = A . B + C

Option 2
=========
_
Q = A. B + C

Option 3
==========
_   _
Q = A + B . C

Option 4
=============
_   _
Q = A + A + B . C``` Option 3

Option 4

Option 2

Option 1

12. Match the logic diagram to the equation.
```Option 1
=========

(A+B).(A.C)

Option 2
=========

(A+B).(A+C)

Option 3
==========

Q = A + B . C

Option 4
=============
(A.B) + (A+C)``` Option 4

Option 3

Option 2

Option 1

13. Match the logic diagram to the equation.
```Option 1
=========

(A+B).(A.C)

Option 2
=========

(A+B).(A+C)

Option 3
==========

A . (B+C)

Option 4
=============
A + (B.C)``` Option 2

Option 4

Option 3

Option 1

14. Which of the following statements correctly describes what this diagram is depicting? NOT made from two NAND gates

OR made from two NAND gates

AND made from two NAND gates

NOR made from four NAND gates

15. Which of the following statements correctly describes what this diagram is depicting? AND made from four NAND gates

OR made from four NAND gates:

NOR made from four NAND gates

AND made from two NAND gates