Mike Holt's 2023 Master Electrician Simulated Exams This exam was designed to give you experience in taking exams under conditions similar to the actual competency exam and to help you determine which subjects and areas of study that you really need to focus on. Based on the 2023 NEC, there are two 100-question simulated exams covering Electrical Theory, the Code, and Electrical Calculations. Digital Answer Key(s) included with this product.