Q. Consider the following differences between Scramjet and Ramjet Engine:
  1. While Ramjet Engine provides subsonic speeds, Scramjet Engine provides supersonic speed
  2. Both engines are capable of working on liquid fuel
Which of the above statements is/are correct?

Answer: Both 1 and 2
Notes: Both the statements are correct. While Ramjet Engine provides subsonic speeds, Scramjet Engine is designed for supersonic speed. Also, both the engines have the capability of working on liquid fuel.