An expert lecture was conducted for the students of Mechanical Engineering on "Amplitude Modulation and Frequency Modulation in Communication Systems " by Professor Hansa Mehra (Associate Professor, Department of Electronics and Communication Engineering JIET). She discussed the basics of modulation, such as different types, applications, modulation methods, and how modulation is used in digital communication systems, e.g. CDMA, GSM, UMTS, etc. A total of 68 students attended this interactive session.