The time to complete DGCA exams depends on the exam type and your preparation. For pilot licenses, it generally takes several months to a couple of years to complete the required training and flight hours. For Aircraft Maintenance Engineer (AME) exams, it can take 2-3 years based on your training program. After completing training and flying hours, you will need additional time to prepare and pass the exams. The entire process can vary based on individual progress and preparation.