BEE FREE Bachelor of Electrical Engineering Digital Circuits Questions and Answers 2

Question 1

What is the output of an XOR gate when both inputs are logic 1?

Accepted Answer

0

Answer

1

Answer

Undefined

Answer

High impedance

Question 2

Which flip-flop is used to divide the input clock frequency by 2?

Accepted Answer

T flip-flop with T=1

Answer

D flip-flop with D=0

Answer

SR flip-flop with S=1

Answer

JK flip-flop with J=0, K=0

Question 3

How many 2-to-1 multiplexers are needed to build a 4-to-1 multiplexer?

Accepted Answer

3

Answer

2

Answer

4

Answer

1

Question 4

What is the minimum number of NAND gates required to implement a NOT gate?

Accepted Answer

1

Answer

2

Answer

3

Answer

4

Question 5

In a 4-bit binary ripple counter, what is the maximum count value before it resets to zero?

Accepted Answer

15

Answer

16

Answer

10

Answer

8

Question 6

Which Boolean expression represents the consensus theorem?

Accepted Answer

AB + A'C + BC = AB + A'C

Answer

AB + A'C + BC = AB + BC

Answer

AB + A'C + BC = A'C + BC

Answer

AB + A'C + BC = AB + A'C + ABC