Home » Which of the following logic gates are known as universal gates? Basic Electronics MCQs Which of the following logic gates are known as universal gates? January 20, 2022 3 Views Q. Which of the following logic gates are known as universal gates? A. NOR, NAND, XNOR B. XOR, NOR, NAND C. NOT, AND, OR D. NOR, NAND Answer: NOR, NAND