MCQ Mojo
access_time
menu
Quiz
Web Stories
CBSE
arrow_drop_down
MCQ Questions for CBSE Class 12 with Answers
MCQ Questions for CBSE Class 11 with Answers
MCQ Questions for CBSE Class 10 with Answers
MCQ Questions for CBSE Class 9 with Answers
MCQ Questions for CBSE Class 8 with Answers
MCQ Questions for CBSE Class 7 with Answers
MCQ Questions for CBSE Class 6 with Answers
MCQ Questions for CBSE Class 5 with Answers
MCQ Questions for CBSE Class 4 with Answers
MCQ Questions for CBSE Class 3 with Answers
MCQ Questions for CBSE Class 2 with Answers
MCQ Questions for CBSE Class 1 with Answers
CBSE
arrow_drop_down
MCQ Questions for CBSE Class 12 with Answers
MCQ Questions for CBSE Class 11 with Answers
MCQ Questions for CBSE Class 10 with Answers
MCQ Questions for CBSE Class 9 with Answers
MCQ Questions for CBSE Class 8 with Answers
MCQ Questions for CBSE Class 7 with Answers
MCQ Questions for CBSE Class 6 with Answers
MCQ Questions for CBSE Class 5 with Answers
MCQ Questions for CBSE Class 4 with Answers
MCQ Questions for CBSE Class 3 with Answers
MCQ Questions for CBSE Class 2 with Answers
MCQ Questions for CBSE Class 1 with Answers
Quiz
Quiz
/
Logic Gates Class 9 MCQ Questions With Answers
1.
Logic circuit has 4 inputs. How many output combinations are possible?
8
16
32
4
2.
When is the output for OR gate TRUE?
A.When both inputs are TRUE.
B.When at least one of the inputs is TRUE.
C.When both inputs are FALSE
D.When at least one of the inputs is FALSE.
3.
"The burglar alarm will go off if either the door or the window or both are opened". This is an example of which type of Logic?
AND
OR
NOT
NOR
4.
The And Gate is represented algebraically by
*
+

%
5.
How many different combinations of 1 and 0 are possible with 2 bits?
2
4
6
8
6.
8.An AND gate has two inputs A and B. What is the Boolean expression for this logic gate?
A.A^B
B.A˅B
C.¬A^B
7.
Binary 10101010 = in decimal?
85
170
180
75
8.
5.Which of the following is FALSE about a NOT gate?
A.The output of NOT is complementary to the input
B.When the input to NOT gate is 0, the output is 1.
C.A NOT gate has two input signals and an output signal.
D.None of the above
9.
2.What is a truth table?
A.A table that denotes the different outputs of the logic gates or circuit with respect to different inputs.
B.A table that represents how logic gates are combined to form a logic circuit.
C.A table that shows the input combinations that result in a binary output 1 in a logic gate.
10.
Logc Circuits are formed of
AND Gates
OR Gates
NOT Gates
All of the above
11.
What type of logic gate is this table showing?
AND
OR
NOT
12.
A NOT gate has…
Two inputs and one output
One input and one output
One input and two outputs
Two inputs and two outputs
13.
Why do we make intermediate columns when constructing truth tables?
Because it gets us more marks
Because it's impossible to get the answer without them
Because it makes working out the solution easier
There is no reason to make them
14.
The OR Gate has Algebraic presentation of
plus sign ()
Plus (+)
None of these
15.
4.A logic circuit has n inputs. How many output combinations are possible?
A.2×n
B.2n
C.n÷2
16.
How many different combinations of 1 and 0 are possible with 1 bit?
1
2
3
4
17.
Electronic switch built in 1947
transistor
semiconductor
diode
vacuum tube
18.
What logic gate is this?
AND
OR
NOT
TO
19.
(C AND D) OR (NOT(A OR B)) = Q, If A=1, B=1, C=0 and D=1, what does Q equal?
0
1
20.
How do we get all the inputs for a truth table with 3 inputs?
Guess all the combinations of 1s and 0s
Count up in binary from 000
Count up in binary from 111
Count up in binary from 1
21.
What is a logic circuit?
A combination of logic gates that performs a specific function.
A combination of logic gates that understands both binary and decimal number systems.
A combination of logic gates that understands decimal number system.
22.
1.Which of the following statement is FALSE about logic gates?
A.Logic gates are the building blocks of electronic circuits.
B.It used in computer components like memory.
C.Combination of logic gates is called a logic circuit.
D.Logic gates understand the binary language.
E.None of the above.
23.
An OR gate has
Two inputs and one output
One input and one output
One input and two outputs
Two inputs and two outputs
24.
The only gate that has 1 input and 1 output is
AND
OR
XOR
NOT
Report Question
Previous
Next
warning
Submit
access_time
Time
Report Question
A bunch of text
Support mcqmojo.com by disabling your adblocker.
×
Please disable the adBlock and continue.
Thank you.
Reload page