Home » Two types of Bipolar Junction Transistors (BJTs) are Basic Electronics MCQs Two types of Bipolar Junction Transistors (BJTs) are January 20, 2022 27 Views Q. Two types of Bipolar Junction Transistors (BJTs) are A. nnn and ppp B. npn and pnp C. pnn and npp D. nnp and ppn Answer: npn and pnp