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Logic Gates(General Knowledge > General Science ) Questions and Answers
Home
Topic
General Knowledge
General Science
Logic Gates
Question 1.
How many different combinations of 1 and 0 are possible with 1 bit?
1
2
3
4
Explanation:-
Answer: Option B. ->
2
Question 2.
A logic circuit has n inputs
2×n
2n
n÷2
None of these
Explanation:-
Answer: Option B. ->
2n
Question 3.
A NAND gate's outputs are the ______ of those of an AND gate
Twin
Sum
Opposite
Absolute value
Explanation:-
Answer: Option C. ->
Opposite
Question 4.
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.
none of the above
Explanation:-
Answer: Option A. ->
A.A table that denotes the different outputs of the logic gates or circuit with respect to different inputs.
Question 5.
Which logic gates output a 1 if their inputs are 0 and 1?
Only OR gates
NAND and OR gates
NOR and AND gates
NAND, OR, and XOR gates
Explanation:-
Answer: Option D. ->
NAND, OR, and XOR gates
Question 6.
What is the output of an AND gate if the inputs are 1 and 0?
ON
2
1
0
Explanation:-
Answer: Option D. ->
0
Question 7.
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.
None of these
Explanation:-
Answer: Option A. ->
A combination of logic gates that performs a specific function.
Question 8.
What is the output of a NOT gate if the inputs is 0?
1
0
OFF
2
Explanation:-
Answer: Option A. ->
1
Question 9.
Which of the following is FALSE about a NOT gate?
The output of NOT is complementary to the input
When the input to NOT gate is 0, the output is 1.
A NOT gate has two input signals and an output signal.
None of the above
Explanation:-
Answer: Option C. ->
A NOT gate has two input signals and an output signal.
Question 10.
How do you make a NOR gate out of an NAND gate using inverters (NOT gates)?
Invert the output from the NAND gate
Invert both the inputs to the NAND gate
Invert one of the inputs to the NAND gate
Invert both the inputs and output of the NAND gate
Explanation:-
Answer: Option D. ->
Invert both the inputs and output of the NAND gate
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