Logic gates 200 MCQs exam based

logic gates 200 MCQs exam based

logic gates introduction

1.The logical gates are categorized into _______

One group

Two groups

Three groups

Four groups

2.__________ are basic gate

NAND & NOR

AND

NOT, AND, & OR

3.__________ are universal gates

NAND & NOR

AND

none

4.__________ are arithmetic gates

NAND & NOR

X-OR & X-NOR

none

5.The basic gate of the TTL logic family is _____
NAND

NOT

NOR

None of the above

6.The basic gate of the ECL logic family is _____
NAND

NOT

OR/ NOR

XOR

7.The power dissipation in the ECL logic family is ______
30mv

40-55mv

50-80mv

60-90mv

8.Which IC is a dual four-input AND gate?
74LS13

74LS20

74LS21

None of the above

9.Which one is a saturated bipolar logic family?
RTL

Schottky TTL

ECL

None of the above

10.The code where all successive numbers differ from their preceding number by single bit is __________


Alphanumeric Code

gray code

11.How many AND gates are required to realize Y = AD + EF + G?

4
5
3
2

12.The NOR gate output will be high if the two inputs are __________


00

01
10

13.Which one is an unsaturated bipolar logic family?
RTL

Schottky TTL

DTL

none

14.How many types of logic families are there?
One

Two

Three

Four

15.The power dissipation in the DTL logic family is ________
1-12mv

4-12mv

6-12mv

8-12mv

16.What are the components used in COS logic family?
PMOS

NMOS

Both a and b

None of the above

17.Which IC is a dual four-input NAND gate?74LS20

74LS21

74LS27

None of the above

18.The DTL logic family has _________

Improved noise margin and fan-out

Low speed

Both a and b

None of the above

19.What is the standard form of DCDVS logic?


Differential Cascade Voltage Switch

Differential Cascade Voltage Complex

Voltage Switched

None of the above

20._________ are the common forms of complex logic gates
OR-AND-Invert (OAI)

AND-OR-Invert (AOI)

Both OAI and AOI

None of the above

_______ are basic gates

NAND

NOT, AND, & OR

AND