HomeElectronics Multiple choice question MCQ online testLogic gates MCQ Quiz Logic gates MCQ Quiz Leave a Comment / Electronics Multiple choice question MCQ online test Spread the love /48 0 votes, 0 avg 39 Created on June 20, 2023Digital electronics LOGIC GATES Most important and interesting Questions of digital Logic gates 1 / 48 Category: Logic gates The output of a logic gate is 0 when all its inputs are at logic 1. The gate is either a. NAND or an AND b. a NAND or an X-OR c. an OR or an X-OR d. a NOR or an X-NOR 2 / 48 Category: Logic gates An any or all gate is the other name of a. OR gate b. X-NOR gate c. X-OR gate d. AND gate 3 / 48 Category: Logic gates The NAND gate can function as a NOT gate if a. inputs are left open b. one input is set to 1 c. all inputs are connected together d. one input is set to 0 4 / 48 Category: Logic gates How many NOR gates are.required to obtain AND operation? a. 3 b. 1 c. 4 d. 2 5 / 48 Category: Logic gates A gate is inhibited when its inhibit input is at logic 1. The gate is a. OR b. AND c. NONE OF THESE d. NAND 6 / 48 Category: Logic gates The output of a gate is LOW if and only if all its inputs are HIGH. it is true for a. AND b. X-NOR c. NAND d. NOR 7 / 48 Category: Logic gates What logic function is produced by adding inverters to the inputs of an AND gate? a. X-OR b. NAND c. NOR d. OR 8 / 48 Category: Logic gates The NOR gate can function as a NOT gate if a. all inputs are connected together b. one input is set to 1 c. one input is set to 0 d. inputs are left open 9 / 48 Category: Logic gates An exclusive NOR gate is logically equivalent to a. X-OR gate followed by an inverter b. inverter followed by an X-OR gate c. NOT gate followed by a NOR gate d. complement of a NOR gate The 10 / 48 Category: Logic gates A gate is enabled when its enable input is at logic 0. The gate is a. NOR b. NAND c. AND d. NONE OF THESE 11 / 48 Category: Logic gates The output of a logic gate is 0 when all its inputs are at logic 0.The gate is either a. an OR or an X-OR b. an AND or a NOR c. an OR or an X-NOR d. a NAND or an X-OR 12 / 48 Category: Logic gates Which of the following gates is known as anticoincidence detector? a. X-NOR gate b. AND gate c. X-OR gate d. OR gate 13 / 48 Category: Logic gates The output of a gate is HIGH when at least one of its inputs is LOW. It is true for a. NAND b. OR c. NOR d. AND 14 / 48 Category: Logic gates A combinational circuit can be designed using only a. AND gates b. OR and X-NOR gates c. NOR gates d. OR gates 15 / 48 Category: Logic gates An AND gate can be imagined as a. transistors connected in series b. transistors connected in parallel c. switches connected in series d. switches connected in parallel 16 / 48 Category: Logic gates What is the logic which controls a stair case light associated with two switches A and B located at the bottom and top of the stair case respectively? a. X-NOR b. AND c. X-OR d. OR 17 / 48 Category: Logic gates A gate is disabled when its disable input is at logic 0. The gate is a. OR b. NONE OF THESE c. AND d. NOR 18 / 48 Category: Logic gates Which of the following is known as a mod-2 adder? a. X-NOR gate b. NOR gate c. X-OR gate d. NAND gate 19 / 48 Category: Logic gates An OR gate can be imagined as a. transistors connected in parallel b. switches connected in parallel c. transistors connected in series d. switches connected in series 20 / 48 Category: Logic gates An all or nothing gate is the other name of a. OR gate b. X-OR gate c. AND gate d. X-NOR gate 21 / 48 Category: Logic gates The output of a gate is LOW when at least one of its inputs is HIGH. This is true for a. NOR b. NAND c. OR d. AND 22 / 48 Category: Logic gates X-OR and X-NOR gates can have how many inputs? a. 2 b. any number c. 1 d. 4 23 / 48 Category: Logic gates The most suitable gate for comparing two bits is a. NAND b. AND c. X-OR d. OR 24 / 48 Category: Logic gates An X-OR gate gives a high output a. if the decimal value of digital word is even b. if it has even number of 0s c. if there are odd number of 1s d. for odd decimal value 25 / 48 Category: Logic gates The output of a NAND gate is low a. only when all the inputs are low b. only when all the inputs are high c. only when at least one input is high d. only when at least one input is low 26 / 48 Category: Logic gates A bubbled NAND gate is equivalent to a a. NOR gate b. NAND gate c. OR gate d. X-OR gate 27 / 48 Category: Logic gates The number of rows in the truth table of a 4-input gate is a. 8 b. 12 c. 16 d. 4 28 / 48 Category: Logic gates The logic expression AB + Abar.Bbar can be implemented by giving the inputs A and B to a two input. a. NOR gate b. X-OR gate c. X-NOR gate d. NAND gate 29 / 48 Category: Logic gates Which of the following gates cannot be used as an inverter? a. NOR b. X-NOR c. NAND d. AND 30 / 48 Category: Logic gates What logic function is produced by adding inverters to the inputs of an OR gate? a. X-NOR b. NAND c. NOR d. AND 31 / 48 Category: Uncategorized A combinational circuit can be designed using only a. OR gates b. OR and X-NOR gates c. NAND gates d. AND gates 32 / 48 Category: Logic gates The output of a gate is HIGH if and only if all ts inputs are LOW. it is true for a. NAND b. X-OR c. X-NOR d. NOR 33 / 48 Category: Logic gates What is the minimum number of two-input NAND gates used to perform the function of 2-input OR gate? a. 3 b. 4 c. 1 d. 2 34 / 48 Category: Logic gates NOT gates are to be added to the inputs of which gate to convert it to a NOR gate? a. NAND b. OR c. X-NOR d. AND 35 / 48 Category: Logic gates A bubbled NOR gate is equivalent to a a. X-OR gate b. NOR gate c. NAND gate d. AND gate 36 / 48 Category: Logic gates The output of a logic gate is 1 when all its inputs are at logic 0. The gate is either a. an AND or an X-NOR b. an OR or a NAND c. a NAND or a NOR d. an X-OR or an X-NOR 37 / 48 Category: Logic gates What is the minimum number of NOR gates required to realize an X-OR gate? a. 6 b. 4 c. 5 d. 3 38 / 48 Category: Logic gates What logic function is produced by adding an inverter to each input and output of an AND gate ? a. NO b. NAND c. OR d. X-OR 39 / 48 Category: Logic gates What is the minimum number of NAND gates required to realize an X-OR gate? a. 4 b. 6 c. 3 d. 5 40 / 48 Category: Logic gates A gate is enabled when its enable input is at logic 1. The gate is a. NAND b. NOR c. OR d. NONE OF THESE 41 / 48 Category: Logic gates What logic function is produced by adding an inverter to each input and output of an OR gate? a. NAND b. AND c. NOR d. X-OR 42 / 48 Category: Logic gates The output of a logic gate is 1 when all its inputs are at logic 1. The gate is either a. a NAND or a NOR b. an OR or an X-OR c. an AND or an OR d. an AND or a NOR 43 / 48 Category: Logic gates Which of the following statements is true? a. AND and NOT gates are necessary and sufficient for realization of any logic function b. NAND gates are not sufficient to realize any logic function c. OR and NOT gates are necessary and sufficient for realization of any logic function. d. NOR gates are sufficient to realize any logic function. 44 / 48 Category: Logic gates Which of the following gate is known as a coincidence detector? a. AND gate b. X-NOR gate c. X-OR gate d. NAND gate 45 / 48 Category: Logic gates NOT gates are to be added to the inputs of which gate to convert it to a NAND gate? a. NOT b. X-OR c. AND d. OR 46 / 48 Category: Logic gates The output of a NOR gate is high a. only when all the inputs are low b. only when all the inputs are high c. only when at least one input is high d. (d) only when at least one input is low 47 / 48 Category: Logic gates A bubbled NAND gate is equivalent to a a. X-OR gate b. OR gate c. NOR gate d. NAND gate 48 / 48 Category: Logic gates A bubbled OR gate is equivalent to a a. NOR gate b. AND gate c. NAND gate d. X-OR gate Your score isThe average score is 10% LinkedIn Facebook 0% Restart quiz Exit Anonymous feedback Thank you Send feedback Spread the love
