BEE BEE Bachelor of Electrical Engineering Digital Logic and Design Questions and Answers 2

Question 1

What is the minimum number of two-input NAND gates required to implement an XOR function?

Accepted Answer

4

Answer

3

Answer

5

Answer

2

Question 2

In a Karnaugh map for four variables, how many cells does each group of adjacent cells must contain?

Accepted Answer

A power of 2

Answer

Any even number

Answer

A prime number

Answer

A multiple of 3

Question 3

Which flip-flop is known as a delay flip-flop because its output follows the input after one clock cycle?

Accepted Answer

D flip-flop

Answer

SR flip-flop

Answer

JK flip-flop

Answer

T flip-flop

Question 4

What is the maximum number of states in a 4-bit Johnson counter?

Accepted Answer

8

Answer

4

Answer

16

Answer

32

Question 5

In Boolean algebra, what does the consensus theorem state about the term AB + A'C + BC?

Accepted Answer

It equals AB + A'C

Answer

It equals BC

Answer

It equals AB + BC

Answer

It equals A'C + BC

Question 6

Which hazard in combinational circuits causes a momentary output of 1 when the expected output should remain 0?

Accepted Answer

Static-0 hazard

Answer

Static-1 hazard

Answer

Dynamic hazard

Answer

Essential hazard