Logic gates MCQ Quiz Leave a Comment / Electronics Multiple choice question MCQ Share this /48 0 votes, 0 avg 12 Created on October 25, 2022Digital electronics LOGIC GATES Most important and interesting Questions of digital Logic gates 1 / 48 Category: Logic gates 1. A bubbled NAND gate is equivalent to a OR gate NAND gate NOR gate X-OR gate 2 / 48 Category: Logic gates 2. An X-OR gate gives a high output if the decimal value of digital word is even if it has even number of 0s for odd decimal value if there are odd number of 1s 3 / 48 Category: Logic gates 3. An all or nothing gate is the other name of OR gate AND gate X-NOR gate X-OR gate 4 / 48 Category: Logic gates 4. What logic function is produced by adding an inverter to each input and output of an OR gate? X-OR NAND NOR AND 5 / 48 Category: Logic gates 5. A bubbled NAND gate is equivalent to a OR gate NOR gate NAND gate X-OR gate 6 / 48 Category: Logic gates 6. Which of the following is known as a mod-2 adder? X-NOR gate X-OR gate NAND gate NOR gate 7 / 48 Category: Logic gates 7. A combinational circuit can be designed using only AND gates OR and X-NOR gates OR gates NOR gates 8 / 48 Category: Logic gates 8. Which of the following gate is known as a coincidence detector? X-NOR gate NAND gate X-OR gate AND gate 9 / 48 Category: Logic gates 9. An AND gate can be imagined as switches connected in parallel switches connected in series transistors connected in series transistors connected in parallel 10 / 48 Category: Logic gates 10. NOT gates are to be added to the inputs of which gate to convert it to a NAND gate? AND OR X-OR NOT 11 / 48 Category: Logic gates 11. A bubbled NOR gate is equivalent to a NOR gate X-OR gate AND gate NAND gate 12 / 48 Category: Logic gates 12. The output of a logic gate is 0 when all its inputs are at logic 0.The gate is either an OR or an X-NOR an AND or a NOR an OR or an X-OR a NAND or an X-OR 13 / 48 Category: Logic gates 13. A gate is disabled when its disable input is at logic 0. The gate is AND NOR NONE OF THESE OR 14 / 48 Category: Logic gates 14. What logic function is produced by adding inverters to the inputs of an OR gate? NAND AND NOR X-NOR 15 / 48 Category: Logic gates 15. What logic function is produced by adding inverters to the inputs of an AND gate? NOR OR NAND X-OR 16 / 48 Category: Logic gates 16. X-OR and X-NOR gates can have how many inputs? any number 2 4 1 17 / 48 Category: Logic gates 17. A gate is inhibited when its inhibit input is at logic 1. The gate is NAND NONE OF THESE AND OR 18 / 48 Category: Logic gates 18. The output of a NAND gate is low only when at least one input is low only when all the inputs are high only when all the inputs are low only when at least one input is high 19 / 48 Category: Logic gates 19. The output of a logic gate is 1 when all its inputs are at logic 1. The gate is either an AND or an OR an AND or a NOR a NAND or a NOR an OR or an X-OR 20 / 48 Category: Logic gates 20. The output of a gate is HIGH when at least one of its inputs is LOW. It is true for NOR NAND OR AND 21 / 48 Category: Logic gates 21. An any or all gate is the other name of AND gate OR gate X-NOR gate X-OR gate 22 / 48 Category: Logic gates 22. A gate is enabled when its enable input is at logic 0. The gate is AND NONE OF THESE NAND NOR 23 / 48 Category: Logic gates 23. The NAND gate can function as a NOT gate if inputs are left open one input is set to 1 all inputs are connected together one input is set to 0 24 / 48 Category: Logic gates 24. What logic function is produced by adding an inverter to each input and output of an AND gate ? X-OR NO OR NAND 25 / 48 Category: Logic gates 25. The NOR gate can function as a NOT gate if inputs are left open all inputs are connected together one input is set to 0 one input is set to 1 26 / 48 Category: Logic gates 26. What is the minimum number of NOR gates required to realize an X-OR gate? 4 5 6 3 27 / 48 Category: Logic gates 27. An exclusive NOR gate is logically equivalent to complement of a NOR gate The X-OR gate followed by an inverter inverter followed by an X-OR gate NOT gate followed by a NOR gate 28 / 48 Category: Logic gates 28. What is the minimum number of two-input NAND gates used to perform the function of 2-input OR gate? 2 3 1 4 29 / 48 Category: Logic gates 29. The output of a logic gate is 0 when all its inputs are at logic 1. The gate is either a NAND or an X-OR a NOR or an X-NOR an OR or an X-OR NAND or an AND 30 / 48 Category: Logic gates 30. The output of a logic gate is 1 when all its inputs are at logic 0. The gate is either a NAND or a NOR an OR or a NAND an X-OR or an X-NOR an AND or an X-NOR 31 / 48 Category: Logic gates 31. Which of the following gates is known as anticoincidence detector? AND gate OR gate X-OR gate X-NOR gate 32 / 48 Category: Logic gates 32. The output of a gate is HIGH if and only if all ts inputs are LOW. it is true for NOR X-NOR NAND X-OR 33 / 48 Category: Logic gates 33. The most suitable gate for comparing two bits is OR AND NAND X-OR 34 / 48 Category: Logic gates 34. What is the logic which controls a stair case light associated with two switches A and B locatedat the bottom and top of the stair case respectively? X-NOR AND OR X-OR 35 / 48 Category: Uncategorized 35. A combinational circuit can be designed using only OR gates AND gates NAND gates OR and X-NOR gates 36 / 48 Category: Logic gates 36. Which of the following statements is true? OR and NOT gates are necessary and sufficient for realization of any logic function. NAND gates are not sufficient to realize any logic function AND and NOT gates are necessary and sufficient for realization of any logic function NOR gates are sufficient to realize any logic function. 37 / 48 Category: Logic gates 37. The output of a NOR gate is high (d) only when at least one input is low only when at least one input is high only when all the inputs are high only when all the inputs are low 38 / 48 Category: Logic gates 38. How many NOR gates are.required to obtain AND operation? 3 2 4 1 39 / 48 Category: Logic gates 39. The logic expression AB + A^{bar}.B^{bar} can be implemented by giving the inputs A and B to a two input. X-OR gate X-NOR gate NAND gate NOR gate 40 / 48 Category: Logic gates 40. The number of rows in the truth table of a 4-input gate is 4 16 8 12 41 / 48 Category: Logic gates 41. What is the minimum number of NAND gates required to realize an X-OR gate? 5 4 3 6 42 / 48 Category: Logic gates 42. The output of a gate is LOW if and only if all its inputs are HIGH. it is true for NAND NOR X-NOR AND 43 / 48 Category: Logic gates 43. Which of the following gates cannot be used as an inverter? NOR NAND X-NOR AND 44 / 48 Category: Logic gates 44. An OR gate can be imagined as transistors connected in parallel switches connected in series transistors connected in series switches connected in parallel 45 / 48 Category: Logic gates 45. A bubbled OR gate is equivalent to a X-OR gate NAND gate AND gate NOR gate 46 / 48 Category: Logic gates 46. NOT gates are to be added to the inputs of which gate to convert it to a NOR gate? AND X-NOR NAND OR 47 / 48 Category: Logic gates 47. The output of a gate is LOW when at least one of its inputs is HIGH. This is true for NAND AND OR NOR 48 / 48 Category: Logic gates 48. A gate is enabled when its enable input is at logic 1. The gate is NAND OR NONE OF THESE NOR Your score is The average score is 12% LinkedIn Facebook Twitter 0% Restart quiz Exit Send feedback Share this