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
Answer
Answer: (B) OR
2. Boolean Algebra is essentially based on
(A) Truth
(B) Logic
(C) Symbol
(D) Numbers
Answer
Answer: (B) Logic
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
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
Answer
Answer: (A) Makes logic decisions
5. How many NAND gates are used to form an AND gate?
(A) 1
(B) 2
(C) 3
(D) 4
Answer
Answer: (B) 2
6. Which logic gate is represented by the following combination of logic gates?
(A) OR
(B) NAND
(C) AND
(D) NOR
Answer
Answer: (C) AND
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
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
Answer
Answer: (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
Answer
Answer: (B) and (C) Inverter and NOR gate
10. The outputs of a NAND gate is 0
(A) If both inputs are 0
(B) If one input is 0 and the other input is 1
(C) If both inputs are 1
(D) If both inputs are 1 or one of the inputs is 1 and the other one is 0
Answer
Answer: (C) If both inputs are 1