You can join the Indian Air Force (IAF) after completing a diploma in Electrical and Electronics Engineering, but not as a commissioned officer through prestigious exams like CDS or AFCAT.

Airmen in IAF (Technical)

• Eligibility:
  • Diploma in any Engineering stream (including Electrical and Electronics) from a recognized institute.
  • Minimum 50% marks in aggregate and English (if not a subject in the Diploma).
  • Age between 19 and 22 years.
    
    
• Selection Process:
  • Written test.
  • Physical Fitness Test (PFT).
  • Initial Selection Test (IST).
    
    
• Role:
  You will be recruited as an Airman in the Group 'X' (Technical) trade. This involves maintaining and repairing various electrical and electronic equipment on IAF aircraft, ground support systems, and other technical installations.
  
  https://competition.careers360.com/exams/iaf-afcat
  
  I hope it helps!