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QUIZ BOOLEAN ALGEBRA

Total questions: 22

Worksheet time: 16mins

Name
Class
Date
1.

Boolean algebra is define as mathematical expression of __________. Fill in the blank with answer.

a)

Computer system

b)

Analog system

c)

Digital system

d)

Solar system

2.
X . X
a)
0
b)
1
c)
X
d)
__
 X
3.
__     __
A  .   B
is the same as
a)
_______
A + B
b)
A . B
c)
B . A
d)
______
A . B
4.
A . ( B + C )
is the same as
a)
___________
A + B + C
b)
( A + B ) ( A + C)
c)
A . B . C
d)
( A . B ) + ( A . C )
5.

Which law is this an example of:

A(B+C) = (A.B)+(A.C)

A+(B.C) = (A+B).(A+C)

a)

Associative

b)

Commutative

c)

Absorption

d)

Distributive

6.

Choose 2 forms of Boolean expression

a)

SOP and POS

b)

Combination and multiples

c)

AND and OR gate

d)

Input of A and B

7.

Select the true function of Karnaugh Map (K-Map):

i. Solve difficult expression

ii. Simplified Boolean expression

iii. Develop truth table of combinational circuit

iv. Differentiate SOP and POS

a)

i, ii, iii, iv

b)

i, ii, iii

c)

i, ii, iv

d)

ii, iii, iv

8.

What is the Logic Expression for this circuit?

a)

Z = NOT (A AND B)

b)

Z = NOT (A OR B)

c)

Z = (NOT A) AND B

d)

Z = (NOT A) OR B

9.

Select the correct SOP expression

a)

AB + CD

b)

AB (CD)

c)

(A+B)(C+D)

d)

A(B)C(D)

10.
(C AND D) OR (NOT(A OR B)) = Q, If A=1, B=1, C=0 and D=1, what does Q equal?
a)
0
b)
1
11.

Which of the following best expresses the commutative law of multiply?

a)

A ⊕ B = B + A

b)

AB = BA

c)

(A+B)’ = AB

d)

A+B = B+A

12.

A NAND gate is called a universal logic element because

a)

All digital computers use NAND gates

b)

All the minimisation techniques are applicable for optimum NAND gate realisation

c)

Everybody use this gate

d)

Any logic function can be realized by NAND gates alone

13.

If a input signal a=11100 is applicable to a NOT gate ,its output signal is

a)

00011

b)

01001

c)

00011

d)

1000

14.

Which of the following is equivalent to a NOT gate?

a)
b)
c)
15.

What will the circuit's output be?

a)

1

b)

0

16.

How many number of cells in the 4-variable K-Map?

a)

4

b)

8

c)

16

d)

32

17.

Find the equivalent Boolean expression of  A + A'B

a)

AB + A'B

b)

A + AB

c)

A + B

d)

A' + B'

18.

1. The Demorgan’s law (AB)' = -----------

a)

A'+B'

b)

A+B

c)

A+B'

d)

A'+B

19.

Apply Demorgan's theorem to simplify the following expression: [(A+B)+C]'

a)

ABC

b)

A'+B+C

c)

A+B+C

d)

A'B'C'

20.

In Boolean expression A+AB simplifies ____

a)

A

b)

B

c)

A+B

d)

1

21.

Write the equivalent boolean expression for the following logic circuit (Use capital letters for boolean expression):

(a)  

22.

Write the equivalent boolean expression for the following logic circuit (Use capital letters for boolean expression):

(a)