logic gates 200 MCQs exam based
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
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