# Logic gates 200+ MCQs exam based

logic gates 200 MCQs || latest 2022

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
• None

3. __________ are universal gates

• NAND & NOR
• AND
• NOT
• None

4. __________ are arithmetic gates

• NAND & NOR
• NOT & 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
• blue code
• None

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 __________

• 11
• 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?

• Voltage Switched
• None

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

21. _______ are basic gates

• NAND
• NOT, AND, & OR
• AND
• None

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