# 300+ TOP MCQs on Digital Electronics and Answers

NEET  Physics is the very imporatant paper in the Medical Entrance EXAM. So these NEET Physics MCQs with Answers for all Concepts as per the new syllabus. Practice daily with these NEET Physics objective questions on air pollution knowledge & problem-solving skills along with time management. NEET Physics Digital Electronics Multiple Choice Questions

## MCQs on Digital Electronics :

1. The following truth table corresponds to the logic gate

 Input Output A B X 0 0 0 0 1 1 1 1 1 1 0 1

(A) NAND
(B) OR
(C) AND
(D) XOR

2. Boolean Algebra is essentially based on
(A) Truth
(B) Logic
(C) Symbol
(D) Numbers

3. The logic behind NOR gate is that it gives
(A) HIgh output when both the inputs are low
(B) Low output when both the inputs are low
(C) HIgh output when both the inputs are high
(D) None of the above

Answer: (A) HIgh output when both the inputs are low

4. A logic gate is an electronic circuit which
(A) Makes logic decisions
(B) Allows electrons flow only in one direction
(C) Woks binary algebra
(D) Alternates between 0 and 1 values

5. How many NAND gates are used to form an AND gate?
(A) 1
(B) 2
(C) 3
(D) 4

6. Which logic gate is represented by the following combination of logic gates? (A) OR
(B) NAND
(C) AND
(D) NOR

7. The output of OR gate is 1
(A) If both inputs are zero
(B) If either or both inputs are 1
(C) Only if both inputs are 1
(D) If either input is zero

Answer: (B) If either or both inputs are 1

8. Which of the following logic gate is a universal gate?
(A) OR
(B) NOT
(C) AND
(D) NOR

9. A gate in which all the inputs must be low to get a high output is
(A) NAND gate
(B) Inverter
(C) NOR gate
(D) AND gate